<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2024 Workiva-->
<!--r:50302b18-f0e4-42cd-b918-5727314feffb,g:47a101b4-209c-450d-85e8-f15aa7887d72-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.bakkt.com/role/Cover" xlink:type="simple" xlink:href="bakkt-20240930.xsd#Cover"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_75119122-5815-4a62-bf99-7740639ef122" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_DocumentInformationTable_75119122-5815-4a62-bf99-7740639ef122" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_f58f6cfa-5eae-4b62-b9ba-86082aca3c28" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_75119122-5815-4a62-bf99-7740639ef122" xlink:to="loc_us-gaap_StatementClassOfStockAxis_f58f6cfa-5eae-4b62-b9ba-86082aca3c28" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_f58f6cfa-5eae-4b62-b9ba-86082aca3c28_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_f58f6cfa-5eae-4b62-b9ba-86082aca3c28" xlink:to="loc_us-gaap_ClassOfStockDomain_f58f6cfa-5eae-4b62-b9ba-86082aca3c28_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_53466c2d-f98f-4027-960c-78552f119a67" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_f58f6cfa-5eae-4b62-b9ba-86082aca3c28" xlink:to="loc_us-gaap_ClassOfStockDomain_53466c2d-f98f-4027-960c-78552f119a67" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_dadb5f82-39bf-4457-82c5-eb2fef85483f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_53466c2d-f98f-4027-960c-78552f119a67" xlink:to="loc_us-gaap_CommonClassAMember_dadb5f82-39bf-4457-82c5-eb2fef85483f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonClassVMember_a32428bb-9e7b-4715-9476-aa279562f8b5" xlink:href="bakkt-20240930.xsd#bakkt_CommonClassVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_53466c2d-f98f-4027-960c-78552f119a67" xlink:to="loc_bakkt_CommonClassVMember_a32428bb-9e7b-4715-9476-aa279562f8b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_926b480d-6eed-4098-bd31-866a8453d3a7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WarrantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_53466c2d-f98f-4027-960c-78552f119a67" xlink:to="loc_us-gaap_WarrantMember_926b480d-6eed-4098-bd31-866a8453d3a7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_5dd2ddb1-a745-4eb8-a224-0bd9ba5ab714" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_DocumentType_5dd2ddb1-a745-4eb8-a224-0bd9ba5ab714" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentQuarterlyReport_55145f53-0155-4fe3-8ae9-0fcac56d7409" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentQuarterlyReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_DocumentQuarterlyReport_55145f53-0155-4fe3-8ae9-0fcac56d7409" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_8c56811c-3be7-44ac-8c52-a8be9bc0de14" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_DocumentPeriodEndDate_8c56811c-3be7-44ac-8c52-a8be9bc0de14" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_03b0436f-a3e5-4229-ab52-5cf5bc949982" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentTransitionReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_DocumentTransitionReport_03b0436f-a3e5-4229-ab52-5cf5bc949982" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_708f6160-02bb-46ea-91a9-53f7f1cc4d54" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityFileNumber_708f6160-02bb-46ea-91a9-53f7f1cc4d54" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_6b865cb3-c6ed-4402-b519-c16c6965d4c3" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityRegistrantName_6b865cb3-c6ed-4402-b519-c16c6965d4c3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_fa19f273-c892-4fde-b180-432690ba823c" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityIncorporationStateCountryCode_fa19f273-c892-4fde-b180-432690ba823c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_1d861713-6cbf-4cd2-b7d1-1a3a1c2c482a" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityTaxIdentificationNumber_1d861713-6cbf-4cd2-b7d1-1a3a1c2c482a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_f9613e5c-d213-44cc-9e49-f2f0088cbbb8" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityAddressAddressLine1_f9613e5c-d213-44cc-9e49-f2f0088cbbb8" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_8effa2a9-bda9-43ad-b819-89f7dcc0c26a" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressAddressLine2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityAddressAddressLine2_8effa2a9-bda9-43ad-b819-89f7dcc0c26a" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_08994920-e9ce-433f-8356-bedf9ae8c1ff" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityAddressCityOrTown_08994920-e9ce-433f-8356-bedf9ae8c1ff" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_45f518d2-c765-43ba-850a-5ea48ceeab85" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityAddressStateOrProvince_45f518d2-c765-43ba-850a-5ea48ceeab85" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_aff13627-2e1a-4217-b898-5a292bd9cb10" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityAddressPostalZipCode_aff13627-2e1a-4217-b898-5a292bd9cb10" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_c69f428d-f70d-4e86-a45f-7538cb12f4c8" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_CityAreaCode_c69f428d-f70d-4e86-a45f-7538cb12f4c8" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_0e0d1473-60d9-491d-89bf-678e096dd5ff" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_LocalPhoneNumber_0e0d1473-60d9-491d-89bf-678e096dd5ff" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_34713994-4aa7-41eb-a260-257f1d844c78" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_Security12bTitle_34713994-4aa7-41eb-a260-257f1d844c78" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_0009093a-f71c-46e9-8639-20e499c8ad38" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_TradingSymbol_0009093a-f71c-46e9-8639-20e499c8ad38" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_4f72362d-de84-4470-a982-2974d1e5c0d0" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_SecurityExchangeName_4f72362d-de84-4470-a982-2974d1e5c0d0" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_40d006c3-6839-4ac1-9957-b6ac5f8c98de" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityCurrentReportingStatus_40d006c3-6839-4ac1-9957-b6ac5f8c98de" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_1bb49ff3-629e-4f57-9b19-e36028fffb56" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityInteractiveDataCurrent_1bb49ff3-629e-4f57-9b19-e36028fffb56" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_a40a1baa-7774-4fae-be69-b0f2b5d7adcf" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityFilerCategory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityFilerCategory_a40a1baa-7774-4fae-be69-b0f2b5d7adcf" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_e14b260b-0572-44d1-8c17-675d83cb5d06" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntitySmallBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntitySmallBusiness_e14b260b-0572-44d1-8c17-675d83cb5d06" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_4a133835-cf06-4a42-a2a2-1681ddec0388" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityEmergingGrowthCompany_4a133835-cf06-4a42-a2a2-1681ddec0388" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityExTransitionPeriod_690505ac-d9b9-4620-85ad-4acb883dfd24" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityExTransitionPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityExTransitionPeriod_690505ac-d9b9-4620-85ad-4acb883dfd24" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_6bf14f8b-b5c9-4649-a209-c629a80ddbc2" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityShellCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityShellCompany_6bf14f8b-b5c9-4649-a209-c629a80ddbc2" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_7b263f88-6d50-400c-ba63-9477616b5f8c" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_7b263f88-6d50-400c-ba63-9477616b5f8c" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_b15ee660-f909-41e2-bbec-adc2a430a0b3" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_AmendmentFlag_b15ee660-f909-41e2-bbec-adc2a430a0b3" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_50ac8f6b-2472-42ae-b081-b258717e67dd" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_DocumentFiscalPeriodFocus_50ac8f6b-2472-42ae-b081-b258717e67dd" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_cc789e63-b982-46c2-bf77-cd8fbb4d944c" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_DocumentFiscalYearFocus_cc789e63-b982-46c2-bf77-cd8fbb4d944c" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_bb371415-ec38-4f74-98e2-605ca9f4b86d" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_CurrentFiscalYearEndDate_bb371415-ec38-4f74-98e2-605ca9f4b86d" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_7a686100-8f81-4c84-b334-6f3691c63eec" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_327938d9-98ef-456b-ae02-ccd1e0214664" xlink:to="loc_dei_EntityCentralIndexKey_7a686100-8f81-4c84-b334-6f3691c63eec" xlink:type="arc" order="30"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ConsolidatedBalanceSheets"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_2929f1e1-6a33-473c-8bbd-f23b968e3b4f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_66583f69-d3f6-4c9d-8c26-a07a63fe9c40" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_2929f1e1-6a33-473c-8bbd-f23b968e3b4f" xlink:to="loc_us-gaap_StatementTable_66583f69-d3f6-4c9d-8c26-a07a63fe9c40" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_e1e2db64-b54c-4d8d-a3c4-59dd86705145" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_66583f69-d3f6-4c9d-8c26-a07a63fe9c40" xlink:to="loc_us-gaap_StatementClassOfStockAxis_e1e2db64-b54c-4d8d-a3c4-59dd86705145" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_e1e2db64-b54c-4d8d-a3c4-59dd86705145_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_e1e2db64-b54c-4d8d-a3c4-59dd86705145" xlink:to="loc_us-gaap_ClassOfStockDomain_e1e2db64-b54c-4d8d-a3c4-59dd86705145_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_2723200b-8863-4436-8ff0-6ed93d548655" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_e1e2db64-b54c-4d8d-a3c4-59dd86705145" xlink:to="loc_us-gaap_ClassOfStockDomain_2723200b-8863-4436-8ff0-6ed93d548655" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_7f5de2a0-97b6-4f6b-a79c-d172c4c4f2e4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_2723200b-8863-4436-8ff0-6ed93d548655" xlink:to="loc_us-gaap_CommonClassAMember_7f5de2a0-97b6-4f6b-a79c-d172c4c4f2e4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonClassVMember_367c0180-68b7-454a-ae32-5172e885eca4" xlink:href="bakkt-20240930.xsd#bakkt_CommonClassVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_2723200b-8863-4436-8ff0-6ed93d548655" xlink:to="loc_bakkt_CommonClassVMember_367c0180-68b7-454a-ae32-5172e885eca4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_12f19cce-889c-4afa-9743-f594da05bd28" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_66583f69-d3f6-4c9d-8c26-a07a63fe9c40" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_12f19cce-889c-4afa-9743-f594da05bd28" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_12f19cce-889c-4afa-9743-f594da05bd28_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_12f19cce-889c-4afa-9743-f594da05bd28" xlink:to="loc_us-gaap_RelatedPartyDomain_12f19cce-889c-4afa-9743-f594da05bd28_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_45b24725-87b9-49ef-ab58-1e796bbd97f1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_12f19cce-889c-4afa-9743-f594da05bd28" xlink:to="loc_us-gaap_RelatedPartyDomain_45b24725-87b9-49ef-ab58-1e796bbd97f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_4def95cd-711e-4efb-a4e5-bcd77f6b3db2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_45b24725-87b9-49ef-ab58-1e796bbd97f1" xlink:to="loc_us-gaap_RelatedPartyMember_4def95cd-711e-4efb-a4e5-bcd77f6b3db2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonrelatedPartyMember_c52cbb7e-1554-4d45-a9cd-7d920a6f93d3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NonrelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_45b24725-87b9-49ef-ab58-1e796bbd97f1" xlink:to="loc_us-gaap_NonrelatedPartyMember_c52cbb7e-1554-4d45-a9cd-7d920a6f93d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_cc2330ea-3add-49cf-8d3e-0ae38ce62f48" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2929f1e1-6a33-473c-8bbd-f23b968e3b4f" xlink:to="loc_us-gaap_AssetsAbstract_cc2330ea-3add-49cf-8d3e-0ae38ce62f48" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_50087733-5243-44d2-a7d5-918a72352230" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_cc2330ea-3add-49cf-8d3e-0ae38ce62f48" xlink:to="loc_us-gaap_AssetsCurrentAbstract_50087733-5243-44d2-a7d5-918a72352230" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_d7e8d70f-03ac-46ea-9304-14c55e846b75" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_50087733-5243-44d2-a7d5-918a72352230" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_d7e8d70f-03ac-46ea-9304-14c55e846b75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_76ca7059-c520-456b-be59-b9d0681dd8a5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_50087733-5243-44d2-a7d5-918a72352230" xlink:to="loc_us-gaap_RestrictedCashCurrent_76ca7059-c520-456b-be59-b9d0681dd8a5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FundsHeldForClients_2d043b91-f03e-4bf1-bf8a-d273d18314cc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FundsHeldForClients"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_50087733-5243-44d2-a7d5-918a72352230" xlink:to="loc_us-gaap_FundsHeldForClients_2d043b91-f03e-4bf1-bf8a-d273d18314cc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent_ab8452a9-f815-4be9-908c-799abf74ab76" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_50087733-5243-44d2-a7d5-918a72352230" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent_ab8452a9-f815-4be9-908c-799abf74ab76" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_d28bac4e-4772-48f7-a250-1e8e7a82aa09" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_50087733-5243-44d2-a7d5-918a72352230" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_d28bac4e-4772-48f7-a250-1e8e7a82aa09" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidInsurance_ad77df99-6a84-4eb1-816d-046f8a80c2ee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PrepaidInsurance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_50087733-5243-44d2-a7d5-918a72352230" xlink:to="loc_us-gaap_PrepaidInsurance_ad77df99-6a84-4eb1-816d-046f8a80c2ee" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SafeguardingAssetPlatformOperatorCryptoAsset_726dfa8c-e89e-429c-ab84-5312a8024e3c" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SafeguardingAssetPlatformOperatorCryptoAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_50087733-5243-44d2-a7d5-918a72352230" xlink:to="loc_srt_SafeguardingAssetPlatformOperatorCryptoAsset_726dfa8c-e89e-429c-ab84-5312a8024e3c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_397e1ecd-9839-4113-931f-da7d48eee39a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_50087733-5243-44d2-a7d5-918a72352230" xlink:to="loc_us-gaap_OtherAssetsCurrent_397e1ecd-9839-4113-931f-da7d48eee39a" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_9529a401-0ee0-4d61-b206-6a29628b6f81" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_50087733-5243-44d2-a7d5-918a72352230" xlink:to="loc_us-gaap_AssetsCurrent_9529a401-0ee0-4d61-b206-6a29628b6f81" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_67ebe371-8c0c-436b-a9cd-bebb4e141244" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_cc2330ea-3add-49cf-8d3e-0ae38ce62f48" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_67ebe371-8c0c-436b-a9cd-bebb4e141244" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_ff1703f5-0c0b-4c75-bf4b-de6c5513680b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_cc2330ea-3add-49cf-8d3e-0ae38ce62f48" xlink:to="loc_us-gaap_Goodwill_ff1703f5-0c0b-4c75-bf4b-de6c5513680b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_ee11c1d7-5e70-416e-ab8c-b338b294bc7c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_cc2330ea-3add-49cf-8d3e-0ae38ce62f48" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_ee11c1d7-5e70-416e-ab8c-b338b294bc7c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_1abd2310-6f9f-49ad-b4b1-69d101d869c7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_cc2330ea-3add-49cf-8d3e-0ae38ce62f48" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_1abd2310-6f9f-49ad-b4b1-69d101d869c7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_dcfae11c-9771-46aa-b80f-d8001bddbc7c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_cc2330ea-3add-49cf-8d3e-0ae38ce62f48" xlink:to="loc_us-gaap_Assets_dcfae11c-9771-46aa-b80f-d8001bddbc7c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2929f1e1-6a33-473c-8bbd-f23b968e3b4f" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_43c57c84-4f26-4a80-a952-bdab6f28f3f5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_43c57c84-4f26-4a80-a952-bdab6f28f3f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_a24f5f09-68b3-4c09-a95d-57f9ef8af02b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_43c57c84-4f26-4a80-a952-bdab6f28f3f5" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_a24f5f09-68b3-4c09-a95d-57f9ef8af02b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CustomerFundsPayableCurrent_1e4cf3b6-e5b8-4111-bd51-342d253e31a6" xlink:href="bakkt-20240930.xsd#bakkt_CustomerFundsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_43c57c84-4f26-4a80-a952-bdab6f28f3f5" xlink:to="loc_bakkt_CustomerFundsPayableCurrent_1e4cf3b6-e5b8-4111-bd51-342d253e31a6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_5191c30b-3be1-4e8b-af76-2288ba71b6d1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_43c57c84-4f26-4a80-a952-bdab6f28f3f5" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_5191c30b-3be1-4e8b-af76-2288ba71b6d1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_9a925022-f009-49c5-a3c4-bfa15c7571fe" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_43c57c84-4f26-4a80-a952-bdab6f28f3f5" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_9a925022-f009-49c5-a3c4-bfa15c7571fe" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SafeguardingLiabilityPlatformOperatorCryptoAsset_705cff01-9176-4d88-8333-1e75cc553c9f" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SafeguardingLiabilityPlatformOperatorCryptoAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_43c57c84-4f26-4a80-a952-bdab6f28f3f5" xlink:to="loc_srt_SafeguardingLiabilityPlatformOperatorCryptoAsset_705cff01-9176-4d88-8333-1e75cc553c9f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_1a3f9abe-c69c-4b41-a4e1-f431b970cba4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_43c57c84-4f26-4a80-a952-bdab6f28f3f5" xlink:to="loc_us-gaap_LiabilitiesCurrent_1a3f9abe-c69c-4b41-a4e1-f431b970cba4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_ed754afa-c448-4ad0-a852-fb1ca7a3e97e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_ed754afa-c448-4ad0-a852-fb1ca7a3e97e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_WarrantLiability_c313ae2b-f7cb-45d3-a784-7d1ca06c78e6" xlink:href="bakkt-20240930.xsd#bakkt_WarrantLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_bakkt_WarrantLiability_c313ae2b-f7cb-45d3-a784-7d1ca06c78e6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_cf95c251-0eac-43b3-90ef-616b535106bf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_cf95c251-0eac-43b3-90ef-616b535106bf" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_1321e61e-2734-4612-b775-cfd5a6a863e2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_us-gaap_Liabilities_1321e61e-2734-4612-b775-cfd5a6a863e2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_16227738-99f6-4ca8-bdf3-961e92a27fc5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_us-gaap_CommitmentsAndContingencies_16227738-99f6-4ca8-bdf3-961e92a27fc5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValueOutstanding_490c6230-a76b-47c7-904d-8449b94bc4b3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockValueOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_us-gaap_CommonStockValueOutstanding_490c6230-a76b-47c7-904d-8449b94bc4b3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_8b130abe-18c4-40f7-9973-d19e56f02b6a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_us-gaap_AdditionalPaidInCapital_8b130abe-18c4-40f7-9973-d19e56f02b6a" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_faa168a8-2c52-402c-aa19-e607e513bb98" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_faa168a8-2c52-402c-aa19-e607e513bb98" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_1a44153e-a260-4e51-b5f9-02dd77744d84" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_1a44153e-a260-4e51-b5f9-02dd77744d84" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_1ae86afc-dc49-4546-9137-f2ae8484fb06" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_us-gaap_StockholdersEquity_1ae86afc-dc49-4546-9137-f2ae8484fb06" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_a402f593-0a41-49ca-9c9a-b053de10188b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_us-gaap_MinorityInterest_a402f593-0a41-49ca-9c9a-b053de10188b" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_76fc2e8e-1e1b-4a4f-9b3f-bf2f9304e24b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_76fc2e8e-1e1b-4a4f-9b3f-bf2f9304e24b" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_19dc6ea6-09fa-45ea-bef2-72675b22e5e4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_ec124659-5558-4563-a556-dd4a239a942d" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_19dc6ea6-09fa-45ea-bef2-72675b22e5e4" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PlatformOperatorCryptoAssetUnsettledTradesLiability_23e5ac9f-2bed-4a55-923a-adba9bd88994" xlink:href="bakkt-20240930.xsd#bakkt_PlatformOperatorCryptoAssetUnsettledTradesLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2929f1e1-6a33-473c-8bbd-f23b968e3b4f" xlink:to="loc_bakkt_PlatformOperatorCryptoAssetUnsettledTradesLiability_23e5ac9f-2bed-4a55-923a-adba9bd88994" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ConsolidatedBalanceSheetsParentheticals" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ConsolidatedBalanceSheetsParentheticals"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ConsolidatedBalanceSheetsParentheticals" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_a5d6281e-8524-4045-b0c8-2c5b3ca95e73" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_bb39ecd8-a8a6-4b8a-b3b4-2d1cb01c248f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_a5d6281e-8524-4045-b0c8-2c5b3ca95e73" xlink:to="loc_us-gaap_StatementTable_bb39ecd8-a8a6-4b8a-b3b4-2d1cb01c248f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_8cb844b3-40b2-4a48-bf25-62f66569d8fc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_bb39ecd8-a8a6-4b8a-b3b4-2d1cb01c248f" xlink:to="loc_us-gaap_StatementClassOfStockAxis_8cb844b3-40b2-4a48-bf25-62f66569d8fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_8cb844b3-40b2-4a48-bf25-62f66569d8fc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_8cb844b3-40b2-4a48-bf25-62f66569d8fc" xlink:to="loc_us-gaap_ClassOfStockDomain_8cb844b3-40b2-4a48-bf25-62f66569d8fc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_6282ac89-5bbb-4b16-b6d6-33d8109ccad5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_8cb844b3-40b2-4a48-bf25-62f66569d8fc" xlink:to="loc_us-gaap_ClassOfStockDomain_6282ac89-5bbb-4b16-b6d6-33d8109ccad5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_36c37e06-9320-493e-a8ce-2529e821055f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_6282ac89-5bbb-4b16-b6d6-33d8109ccad5" xlink:to="loc_us-gaap_CommonClassAMember_36c37e06-9320-493e-a8ce-2529e821055f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonClassVMember_e3042c68-9fd7-4e25-b0ce-e521cc33a45f" xlink:href="bakkt-20240930.xsd#bakkt_CommonClassVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_6282ac89-5bbb-4b16-b6d6-33d8109ccad5" xlink:to="loc_bakkt_CommonClassVMember_e3042c68-9fd7-4e25-b0ce-e521cc33a45f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_550e4bc8-96a5-4f02-a524-1c3f7a4216c7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a5d6281e-8524-4045-b0c8-2c5b3ca95e73" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_550e4bc8-96a5-4f02-a524-1c3f7a4216c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_b83e6f5a-0a42-48d9-b3cd-f12e0c030d7f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a5d6281e-8524-4045-b0c8-2c5b3ca95e73" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_b83e6f5a-0a42-48d9-b3cd-f12e0c030d7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_df58781f-7f4e-4ba8-8a57-a2e74400361a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a5d6281e-8524-4045-b0c8-2c5b3ca95e73" xlink:to="loc_us-gaap_CommonStockSharesIssued_df58781f-7f4e-4ba8-8a57-a2e74400361a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_47fb2024-8053-49d2-aa18-18bf38316480" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a5d6281e-8524-4045-b0c8-2c5b3ca95e73" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_47fb2024-8053-49d2-aa18-18bf38316480" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ConsolidatedStatementsofOperations" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ConsolidatedStatementsofOperations"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ConsolidatedStatementsofOperations" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_aa1f33b5-1717-4b4e-b005-1800e04f5a4c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:to="loc_us-gaap_StatementTable_aa1f33b5-1717-4b4e-b005-1800e04f5a4c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerSalesChannelAxis_10bae2fe-dabd-4a38-8b2f-1cdf80f82ca2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerSalesChannelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_aa1f33b5-1717-4b4e-b005-1800e04f5a4c" xlink:to="loc_us-gaap_ContractWithCustomerSalesChannelAxis_10bae2fe-dabd-4a38-8b2f-1cdf80f82ca2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerSalesChannelDomain_10bae2fe-dabd-4a38-8b2f-1cdf80f82ca2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerSalesChannelDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ContractWithCustomerSalesChannelAxis_10bae2fe-dabd-4a38-8b2f-1cdf80f82ca2" xlink:to="loc_us-gaap_ContractWithCustomerSalesChannelDomain_10bae2fe-dabd-4a38-8b2f-1cdf80f82ca2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerSalesChannelDomain_a7195fb8-7be8-4533-9362-c741b864da22" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerSalesChannelDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ContractWithCustomerSalesChannelAxis_10bae2fe-dabd-4a38-8b2f-1cdf80f82ca2" xlink:to="loc_us-gaap_ContractWithCustomerSalesChannelDomain_a7195fb8-7be8-4533-9362-c741b864da22" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_SalesChannelAlternativePaymentPlatformMember_a5d43398-2457-4970-a11d-a9be95da78b1" xlink:href="bakkt-20240930.xsd#bakkt_SalesChannelAlternativePaymentPlatformMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerSalesChannelDomain_a7195fb8-7be8-4533-9362-c741b864da22" xlink:to="loc_bakkt_SalesChannelAlternativePaymentPlatformMember_a5d43398-2457-4970-a11d-a9be95da78b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_SalesChannelLoyaltyRedemptionPlatformMember_65b4cdf7-1982-418f-aad1-bcc8fe5f516d" xlink:href="bakkt-20240930.xsd#bakkt_SalesChannelLoyaltyRedemptionPlatformMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerSalesChannelDomain_a7195fb8-7be8-4533-9362-c741b864da22" xlink:to="loc_bakkt_SalesChannelLoyaltyRedemptionPlatformMember_65b4cdf7-1982-418f-aad1-bcc8fe5f516d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_8fa032ee-823f-40b0-82ff-7dffe3a29356" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:to="loc_us-gaap_RevenuesAbstract_8fa032ee-823f-40b0-82ff-7dffe3a29356" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_3e9538d1-5544-4db3-b925-d3ed9bc7b533" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_8fa032ee-823f-40b0-82ff-7dffe3a29356" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_3e9538d1-5544-4db3-b925-d3ed9bc7b533" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:to="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CryptoCosts_aa770ee0-b105-4644-add6-9cc5499ee8f3" xlink:href="bakkt-20240930.xsd#bakkt_CryptoCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_bakkt_CryptoCosts_aa770ee0-b105-4644-add6-9cc5499ee8f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ExecutionClearingAndBrokerageFees_3753ff84-8907-482f-90ba-5c34e471b5ec" xlink:href="bakkt-20240930.xsd#bakkt_ExecutionClearingAndBrokerageFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_bakkt_ExecutionClearingAndBrokerageFees_3753ff84-8907-482f-90ba-5c34e471b5ec" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_71e32431-41b0-4f9f-b827-b5ed53cb1e8a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_us-gaap_LaborAndRelatedExpense_71e32431-41b0-4f9f-b827-b5ed53cb1e8a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfessionalFees_6f890006-30d2-4a68-a764-9dbdff21a15e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfessionalFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_us-gaap_ProfessionalFees_6f890006-30d2-4a68-a764-9dbdff21a15e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommunicationsAndInformationTechnology_3f84aa85-ded8-4238-bb5d-48d89eacc289" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommunicationsAndInformationTechnology"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_us-gaap_CommunicationsAndInformationTechnology_3f84aa85-ded8-4238-bb5d-48d89eacc289" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherSellingGeneralAndAdministrativeExpense_7cfad13a-8c59-4215-89f9-390830df757f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherSellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_us-gaap_OtherSellingGeneralAndAdministrativeExpense_7cfad13a-8c59-4215-89f9-390830df757f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_1da8d910-00c9-4003-877d-76a3cf7c4435" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_1da8d910-00c9-4003-877d-76a3cf7c4435" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_f6de8e1f-a20d-4792-ba78-523eb1aa1bc3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_us-gaap_DepreciationAndAmortization_f6de8e1f-a20d-4792-ba78-523eb1aa1bc3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesRelatedParty_9d875f87-e474-491a-a399-9615c47d99c0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostsAndExpensesRelatedParty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_us-gaap_CostsAndExpensesRelatedParty_9d875f87-e474-491a-a399-9615c47d99c0" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetImpairment_208d3dc6-3963-4f25-a83c-18b5c63ca241" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GoodwillAndIntangibleAssetImpairment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetImpairment_208d3dc6-3963-4f25-a83c-18b5c63ca241" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_9f68a0c8-aca0-4d6e-a582-59e2a7340847" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ImpairmentOfLongLivedAssetsHeldForUse"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_9f68a0c8-aca0-4d6e-a582-59e2a7340847" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_94146dde-3b9d-4edb-ac4a-4c7f81b035cc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_us-gaap_RestructuringCharges_94146dde-3b9d-4edb-ac4a-4c7f81b035cc" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating_806e4931-b0a0-4983-850e-96819e14e6cf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCostAndExpenseOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_us-gaap_OtherCostAndExpenseOperating_806e4931-b0a0-4983-850e-96819e14e6cf" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_a967fa32-a5da-4954-9483-cbf87c691da9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_b56ee0e9-0cd1-4d55-a66b-107c84e74f9d" xlink:to="loc_us-gaap_OperatingExpenses_a967fa32-a5da-4954-9483-cbf87c691da9" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_b6391dc2-3718-4dca-8e65-8eb7ac0bcf64" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:to="loc_us-gaap_OperatingIncomeLoss_b6391dc2-3718-4dca-8e65-8eb7ac0bcf64" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_c8879dde-cd17-4f33-9f71-a991890f5865" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_c8879dde-cd17-4f33-9f71-a991890f5865" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAdjustmentOfWarrants_8336f563-6956-45a7-a676-fb2e3bf12750" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAdjustmentOfWarrants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:to="loc_us-gaap_FairValueAdjustmentOfWarrants_8336f563-6956-45a7-a676-fb2e3bf12750" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_9c505e33-63e7-4c66-a310-2b9c91b8efe9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_9c505e33-63e7-4c66-a310-2b9c91b8efe9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_659aba1c-7a79-40bd-be8f-1195d28812a3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_659aba1c-7a79-40bd-be8f-1195d28812a3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_8b0d1f1f-0355-4f2f-98df-4b1630b7a137" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_8b0d1f1f-0355-4f2f-98df-4b1630b7a137" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_97fecee5-f157-4eec-987a-d49fca47e65c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:to="loc_us-gaap_ProfitLoss_97fecee5-f157-4eec-987a-d49fca47e65c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_78613ee2-75c9-4821-842f-d32f95791164" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_78613ee2-75c9-4821-842f-d32f95791164" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_0fddacc4-8dd7-4830-ae99-8fdbd3c0672b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:to="loc_us-gaap_NetIncomeLoss_0fddacc4-8dd7-4830-ae99-8fdbd3c0672b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_0da25b97-a2f0-4d74-801a-8f3b573bfcab" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_cb0869e2-41cf-4374-9f7c-3160d24ae9a8" xlink:to="loc_us-gaap_EarningsPerShareAbstract_0da25b97-a2f0-4d74-801a-8f3b573bfcab" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_be29b882-7abf-43dd-a86a-03f48e3f0fd7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_0da25b97-a2f0-4d74-801a-8f3b573bfcab" xlink:to="loc_us-gaap_EarningsPerShareBasic_be29b882-7abf-43dd-a86a-03f48e3f0fd7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_4bee0297-92a6-43be-8373-868bd4690a3d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_0da25b97-a2f0-4d74-801a-8f3b573bfcab" xlink:to="loc_us-gaap_EarningsPerShareDiluted_4bee0297-92a6-43be-8373-868bd4690a3d" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ConsolidatedStatementsofOperationsParentheticals" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ConsolidatedStatementsofOperationsParentheticals"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ConsolidatedStatementsofOperationsParentheticals" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_b87b7d28-0588-41da-ae2e-c97720184f2e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_e07cf1c2-3396-419c-9366-8029dcdfdbfb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_b87b7d28-0588-41da-ae2e-c97720184f2e" xlink:to="loc_us-gaap_StatementTable_e07cf1c2-3396-419c-9366-8029dcdfdbfb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e44bca7b-d338-493c-80d3-cc67adb5be33" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_e07cf1c2-3396-419c-9366-8029dcdfdbfb" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e44bca7b-d338-493c-80d3-cc67adb5be33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_e44bca7b-d338-493c-80d3-cc67adb5be33_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e44bca7b-d338-493c-80d3-cc67adb5be33" xlink:to="loc_us-gaap_RelatedPartyDomain_e44bca7b-d338-493c-80d3-cc67adb5be33_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_dcebf119-5e11-4e20-88a7-f804961ad495" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_e44bca7b-d338-493c-80d3-cc67adb5be33" xlink:to="loc_us-gaap_RelatedPartyDomain_dcebf119-5e11-4e20-88a7-f804961ad495" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_92a22176-f93a-43c9-a0df-fd3b5383a7fd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_dcebf119-5e11-4e20-88a7-f804961ad495" xlink:to="loc_us-gaap_RelatedPartyMember_92a22176-f93a-43c9-a0df-fd3b5383a7fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_72b518ae-9c52-42d8-aaec-2f037bc774ac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b87b7d28-0588-41da-ae2e-c97720184f2e" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_72b518ae-9c52-42d8-aaec-2f037bc774ac" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ConsolidatedStatementsofChangesinStockholdersEquity" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ConsolidatedStatementsofChangesinStockholdersEquity"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ConsolidatedStatementsofChangesinStockholdersEquity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_e05ee239-3fb1-4088-a59e-f631d9b79973" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_f2b48c46-69a9-4c98-a56c-919be4f3375b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_e05ee239-3fb1-4088-a59e-f631d9b79973" xlink:to="loc_us-gaap_StatementTable_f2b48c46-69a9-4c98-a56c-919be4f3375b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_bfe435a5-a988-4210-bc50-9b9dc6b4ca3a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_f2b48c46-69a9-4c98-a56c-919be4f3375b" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_bfe435a5-a988-4210-bc50-9b9dc6b4ca3a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_bfe435a5-a988-4210-bc50-9b9dc6b4ca3a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_bfe435a5-a988-4210-bc50-9b9dc6b4ca3a" xlink:to="loc_us-gaap_EquityComponentDomain_bfe435a5-a988-4210-bc50-9b9dc6b4ca3a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_22ebcd99-4b6b-48bb-b2e5-d91ddda889cd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_bfe435a5-a988-4210-bc50-9b9dc6b4ca3a" xlink:to="loc_us-gaap_EquityComponentDomain_22ebcd99-4b6b-48bb-b2e5-d91ddda889cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParentMember_21c4f156-e1a5-4ea0-8efa-e03b4051aded" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_22ebcd99-4b6b-48bb-b2e5-d91ddda889cd" xlink:to="loc_us-gaap_ParentMember_21c4f156-e1a5-4ea0-8efa-e03b4051aded" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_b49e716d-3f3e-41a2-9f60-79367cb24816" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_21c4f156-e1a5-4ea0-8efa-e03b4051aded" xlink:to="loc_us-gaap_CommonStockMember_b49e716d-3f3e-41a2-9f60-79367cb24816" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_b4430c7d-3fb7-4ce9-b4e2-b96bd9318fb0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_21c4f156-e1a5-4ea0-8efa-e03b4051aded" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_b4430c7d-3fb7-4ce9-b4e2-b96bd9318fb0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_d0d78a92-e2d6-4e49-91c0-3255a8bf7e73" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_21c4f156-e1a5-4ea0-8efa-e03b4051aded" xlink:to="loc_us-gaap_RetainedEarningsMember_d0d78a92-e2d6-4e49-91c0-3255a8bf7e73" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_9a72712f-6a57-4c1d-a519-1031cb9571e7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_21c4f156-e1a5-4ea0-8efa-e03b4051aded" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_9a72712f-6a57-4c1d-a519-1031cb9571e7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_c761e848-b8c4-42b9-ab26-c679d8a47a0d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_22ebcd99-4b6b-48bb-b2e5-d91ddda889cd" xlink:to="loc_us-gaap_NoncontrollingInterestMember_c761e848-b8c4-42b9-ab26-c679d8a47a0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_b7c6d9f3-c2bd-452a-acaa-1fbf92ff21ca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_f2b48c46-69a9-4c98-a56c-919be4f3375b" xlink:to="loc_us-gaap_StatementClassOfStockAxis_b7c6d9f3-c2bd-452a-acaa-1fbf92ff21ca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_b7c6d9f3-c2bd-452a-acaa-1fbf92ff21ca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_b7c6d9f3-c2bd-452a-acaa-1fbf92ff21ca" xlink:to="loc_us-gaap_ClassOfStockDomain_b7c6d9f3-c2bd-452a-acaa-1fbf92ff21ca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_90686e6b-556d-4459-8042-882a466f073e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_b7c6d9f3-c2bd-452a-acaa-1fbf92ff21ca" xlink:to="loc_us-gaap_ClassOfStockDomain_90686e6b-556d-4459-8042-882a466f073e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_527abdfe-ba52-441f-920d-7130599db82c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_90686e6b-556d-4459-8042-882a466f073e" xlink:to="loc_us-gaap_CommonClassAMember_527abdfe-ba52-441f-920d-7130599db82c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonClassVMember_1089996c-a96b-48a9-92cc-d6578f968072" xlink:href="bakkt-20240930.xsd#bakkt_CommonClassVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_90686e6b-556d-4459-8042-882a466f073e" xlink:to="loc_bakkt_CommonClassVMember_1089996c-a96b-48a9-92cc-d6578f968072" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e05ee239-3fb1-4088-a59e-f631d9b79973" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_bce9ba47-180b-4091-8a7e-9fc24e76684c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_bce9ba47-180b-4091-8a7e-9fc24e76684c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_57177765-a5db-4990-92d4-9bdbcc318cee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_57177765-a5db-4990-92d4-9bdbcc318cee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_4ed3709b-5941-4797-bdd1-52e05f9ebb51" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_4ed3709b-5941-4797-bdd1-52e05f9ebb51" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_NoncontrollingInterestIncreaseFromShareBasedCompensationArrangement_0241d66b-efc9-4494-b2de-a965102b8ada" xlink:href="bakkt-20240930.xsd#bakkt_NoncontrollingInterestIncreaseFromShareBasedCompensationArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_bakkt_NoncontrollingInterestIncreaseFromShareBasedCompensationArrangement_0241d66b-efc9-4494-b2de-a965102b8ada" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationForfeited_fff61f3e-9415-4741-a368-919482b570b5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationForfeited"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationForfeited_fff61f3e-9415-4741-a368-919482b570b5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationForfeited_0a979716-3a88-47d5-8f4d-0bdc70a70a0e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationForfeited"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationForfeited_0a979716-3a88-47d5-8f4d-0bdc70a70a0e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_1f1ce28a-19c5-4b02-b1f0-cd130475546d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_1f1ce28a-19c5-4b02-b1f0-cd130475546d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_37279049-9a8f-4927-b488-3a3f3f53c344" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_37279049-9a8f-4927-b488-3a3f3f53c344" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_StockIssuedDuringPeriodSharesWarrantsExercised_dc5d91dd-fdd9-4447-a2a5-39d0abbeb0d5" xlink:href="bakkt-20240930.xsd#bakkt_StockIssuedDuringPeriodSharesWarrantsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_bakkt_StockIssuedDuringPeriodSharesWarrantsExercised_dc5d91dd-fdd9-4447-a2a5-39d0abbeb0d5" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_f4ffbcaf-001e-45d7-b3ff-836716a89f61" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_f4ffbcaf-001e-45d7-b3ff-836716a89f61" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_625c2f1d-6651-464a-9f97-6d2f037480d1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_625c2f1d-6651-464a-9f97-6d2f037480d1" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_82d63f02-ef8c-438c-a6ff-d1595454d25c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_82d63f02-ef8c-438c-a6ff-d1595454d25c" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_f629d8f6-1393-4b09-bf64-4bca1780244c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_f629d8f6-1393-4b09-bf64-4bca1780244c" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_7573eb08-348c-46ba-8dba-296fc095941b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesAcquisitions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_7573eb08-348c-46ba-8dba-296fc095941b" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_995ef52f-4bef-43ee-874f-e5088603fb26" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodValueAcquisitions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_995ef52f-4bef-43ee-874f-e5088603fb26" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_5f3ff63f-e9d2-4c6c-b990-24f8a0466a3b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_5f3ff63f-e9d2-4c6c-b990-24f8a0466a3b" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_061674ec-1852-45e4-a38f-984afde30344" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_061674ec-1852-45e4-a38f-984afde30344" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_07cad4bd-30e3-4c18-907a-0f3795d119b0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_8b7726e6-48a9-4b61-b373-dbd946f2f8e2" xlink:to="loc_us-gaap_ProfitLoss_07cad4bd-30e3-4c18-907a-0f3795d119b0" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_0795d311-de1e-424b-8e6f-b828c0fbff47" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_129f2e58-f48c-4699-b193-7d80fea7384f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ConsolidatedStatementsofCashFlows"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_48ca2c29-7d6d-41a5-bc57-79708e1700bc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_6ba96a4f-eebe-4e3b-897c-e73f0ba1159e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_48ca2c29-7d6d-41a5-bc57-79708e1700bc" xlink:to="loc_us-gaap_StatementTable_6ba96a4f-eebe-4e3b-897c-e73f0ba1159e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_1cae7278-a91f-4e61-b003-e3ac5c048444" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_6ba96a4f-eebe-4e3b-897c-e73f0ba1159e" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_1cae7278-a91f-4e61-b003-e3ac5c048444" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1cae7278-a91f-4e61-b003-e3ac5c048444_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_1cae7278-a91f-4e61-b003-e3ac5c048444" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1cae7278-a91f-4e61-b003-e3ac5c048444_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_89cb4501-da14-493f-8f34-86c102a0d750" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_1cae7278-a91f-4e61-b003-e3ac5c048444" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_89cb4501-da14-493f-8f34-86c102a0d750" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ApexCryptoLLCMember_387947ed-7b83-4077-82ae-0e672647cdbd" xlink:href="bakkt-20240930.xsd#bakkt_ApexCryptoLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_89cb4501-da14-493f-8f34-86c102a0d750" xlink:to="loc_bakkt_ApexCryptoLLCMember_387947ed-7b83-4077-82ae-0e672647cdbd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_BumpedFinancialLLCMember_2c13b61c-95d9-4536-9a35-c8d6624193b7" xlink:href="bakkt-20240930.xsd#bakkt_BumpedFinancialLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_89cb4501-da14-493f-8f34-86c102a0d750" xlink:to="loc_bakkt_BumpedFinancialLLCMember_2c13b61c-95d9-4536-9a35-c8d6624193b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_047fa805-07eb-41d6-9ff8-c07d9b567381" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_48ca2c29-7d6d-41a5-bc57-79708e1700bc" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_047fa805-07eb-41d6-9ff8-c07d9b567381" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_643bfe7c-f5df-4310-bf88-0dcb455fd0ac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_047fa805-07eb-41d6-9ff8-c07d9b567381" xlink:to="loc_us-gaap_ProfitLoss_643bfe7c-f5df-4310-bf88-0dcb455fd0ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0dfb589f-726c-4a92-9a3a-a9946240a1f3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_047fa805-07eb-41d6-9ff8-c07d9b567381" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0dfb589f-726c-4a92-9a3a-a9946240a1f3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_442498ee-84f0-4aed-adeb-6659f963fb2d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0dfb589f-726c-4a92-9a3a-a9946240a1f3" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_442498ee-84f0-4aed-adeb-6659f963fb2d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_477bbb2e-2ed1-4fcd-aa65-89a3a07bfe0f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0dfb589f-726c-4a92-9a3a-a9946240a1f3" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_477bbb2e-2ed1-4fcd-aa65-89a3a07bfe0f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_a548d873-e116-40ce-a1f9-e8a4133c5b79" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0dfb589f-726c-4a92-9a3a-a9946240a1f3" xlink:to="loc_us-gaap_ShareBasedCompensation_a548d873-e116-40ce-a1f9-e8a4133c5b79" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ShareBasedPaymentArrangementExpenseAndDeferredCompensationArrangementWithIndividualCompensationExpense_80ee21f4-c9d9-4ee8-b0ca-c407a0ff86af" xlink:href="bakkt-20240930.xsd#bakkt_ShareBasedPaymentArrangementExpenseAndDeferredCompensationArrangementWithIndividualCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0dfb589f-726c-4a92-9a3a-a9946240a1f3" xlink:to="loc_bakkt_ShareBasedPaymentArrangementExpenseAndDeferredCompensationArrangementWithIndividualCompensationExpense_80ee21f4-c9d9-4ee8-b0ca-c407a0ff86af" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ForfeitureAndCancellationOfCommonUnits_b959f330-57c2-4d28-9097-79becdcd60e1" xlink:href="bakkt-20240930.xsd#bakkt_ForfeitureAndCancellationOfCommonUnits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0dfb589f-726c-4a92-9a3a-a9946240a1f3" xlink:to="loc_bakkt_ForfeitureAndCancellationOfCommonUnits_b959f330-57c2-4d28-9097-79becdcd60e1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_9b30f08d-cf0e-44e9-82f8-8be935b96423" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ImpairmentOfLongLivedAssetsHeldForUse"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0dfb589f-726c-4a92-9a3a-a9946240a1f3" xlink:to="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_9b30f08d-cf0e-44e9-82f8-8be935b96423" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetImpairment_f4c2be09-891d-43a4-96c1-722382412ac8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GoodwillAndIntangibleAssetImpairment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0dfb589f-726c-4a92-9a3a-a9946240a1f3" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetImpairment_f4c2be09-891d-43a4-96c1-722382412ac8" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfOtherAssets_820b79e8-42ca-4f11-9eff-93c1f3966ca1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnSaleOfOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0dfb589f-726c-4a92-9a3a-a9946240a1f3" xlink:to="loc_us-gaap_GainLossOnSaleOfOtherAssets_820b79e8-42ca-4f11-9eff-93c1f3966ca1" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAdjustmentOfWarrants_9e919eb9-57e4-433a-8f5c-3903872330a1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAdjustmentOfWarrants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0dfb589f-726c-4a92-9a3a-a9946240a1f3" xlink:to="loc_us-gaap_FairValueAdjustmentOfWarrants_9e919eb9-57e4-433a-8f5c-3903872330a1" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_60ab4a44-2091-4ce8-98de-099b45f77867" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0dfb589f-726c-4a92-9a3a-a9946240a1f3" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_60ab4a44-2091-4ce8-98de-099b45f77867" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_99206731-08d6-491b-8124-7125642617de" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_047fa805-07eb-41d6-9ff8-c07d9b567381" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_99206731-08d6-491b-8124-7125642617de" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_75155694-9b9c-4eb4-8e0f-faaf3636d8ba" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_99206731-08d6-491b-8124-7125642617de" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_75155694-9b9c-4eb4-8e0f-faaf3636d8ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidExpense_1c30c7f0-ea98-4e3a-9070-5b2557178fa0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInPrepaidExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_99206731-08d6-491b-8124-7125642617de" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidExpense_1c30c7f0-ea98-4e3a-9070-5b2557178fa0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDepositOtherAssets_b2541df4-8b41-4d8e-ab45-6f145a4e4d47" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInDepositOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_99206731-08d6-491b-8124-7125642617de" xlink:to="loc_us-gaap_IncreaseDecreaseInDepositOtherAssets_b2541df4-8b41-4d8e-ab45-6f145a4e4d47" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_a5d7b527-5dda-48a7-abac-5921027f923f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_99206731-08d6-491b-8124-7125642617de" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_a5d7b527-5dda-48a7-abac-5921027f923f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_IncreaseDecreaseInPlatformOperatorCryptoAssetUnsettledTradesLiability_55af1a7b-b397-4739-be52-a805c8f901e2" xlink:href="bakkt-20240930.xsd#bakkt_IncreaseDecreaseInPlatformOperatorCryptoAssetUnsettledTradesLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_99206731-08d6-491b-8124-7125642617de" xlink:to="loc_bakkt_IncreaseDecreaseInPlatformOperatorCryptoAssetUnsettledTradesLiability_55af1a7b-b397-4739-be52-a805c8f901e2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDueToRelatedParties_8ee60a31-d7a7-4130-86ba-ddbc99e3111e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInDueToRelatedParties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_99206731-08d6-491b-8124-7125642617de" xlink:to="loc_us-gaap_IncreaseDecreaseInDueToRelatedParties_8ee60a31-d7a7-4130-86ba-ddbc99e3111e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_a584c62c-9bbc-437f-8254-1d1c15aaa8c8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_99206731-08d6-491b-8124-7125642617de" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_a584c62c-9bbc-437f-8254-1d1c15aaa8c8" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_f475f4b0-6cc7-41ae-aae3-a407d48367b2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_99206731-08d6-491b-8124-7125642617de" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_f475f4b0-6cc7-41ae-aae3-a407d48367b2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_IncreaseDecreaseInCustomerFundsPayable_45514f41-b0a9-474a-b261-d55ddaf53872" xlink:href="bakkt-20240930.xsd#bakkt_IncreaseDecreaseInCustomerFundsPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_99206731-08d6-491b-8124-7125642617de" xlink:to="loc_bakkt_IncreaseDecreaseInCustomerFundsPayable_45514f41-b0a9-474a-b261-d55ddaf53872" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_3d005cb1-5b4e-4544-afa6-71017792dc64" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_99206731-08d6-491b-8124-7125642617de" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_3d005cb1-5b4e-4544-afa6-71017792dc64" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_6f4ef1fc-b971-4d8a-a6e8-77ddbfe6b2c9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_047fa805-07eb-41d6-9ff8-c07d9b567381" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_6f4ef1fc-b971-4d8a-a6e8-77ddbfe6b2c9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_fc0ee045-b1c9-4881-a2bc-f416d35d9511" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_48ca2c29-7d6d-41a5-bc57-79708e1700bc" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_fc0ee045-b1c9-4881-a2bc-f416d35d9511" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_8e546b26-e221-4070-9bb8-aacd75417721" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireProductiveAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_fc0ee045-b1c9-4881-a2bc-f416d35d9511" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_8e546b26-e221-4070-9bb8-aacd75417721" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_3d87a408-5632-4edc-bd0e-cae3031889a0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_fc0ee045-b1c9-4881-a2bc-f416d35d9511" xlink:to="loc_us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_3d87a408-5632-4edc-bd0e-cae3031889a0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_c5392790-56e8-4a19-a926-c689423b0214" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_fc0ee045-b1c9-4881-a2bc-f416d35d9511" xlink:to="loc_us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities_c5392790-56e8-4a19-a926-c689423b0214" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_c1024189-3046-41e9-8c1f-746992c377a6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_fc0ee045-b1c9-4881-a2bc-f416d35d9511" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_c1024189-3046-41e9-8c1f-746992c377a6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_ed699725-da39-4bc6-b4e6-8a166fd50733" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_fc0ee045-b1c9-4881-a2bc-f416d35d9511" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_ed699725-da39-4bc6-b4e6-8a166fd50733" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_92b2f040-8cae-44ad-8e9b-e4f8334876c5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_48ca2c29-7d6d-41a5-bc57-79708e1700bc" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_92b2f040-8cae-44ad-8e9b-e4f8334876c5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_6e097445-1ce2-4190-a693-8a19304f822b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_92b2f040-8cae-44ad-8e9b-e4f8334876c5" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_6e097445-1ce2-4190-a693-8a19304f822b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromWarrantExercises_77e4ef94-2932-4436-8bf9-4f15277ccd65" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromWarrantExercises"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_92b2f040-8cae-44ad-8e9b-e4f8334876c5" xlink:to="loc_us-gaap_ProceedsFromWarrantExercises_77e4ef94-2932-4436-8bf9-4f15277ccd65" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_6f54faef-78ae-4236-992c-5f18b03b68fd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_92b2f040-8cae-44ad-8e9b-e4f8334876c5" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_6f54faef-78ae-4236-992c-5f18b03b68fd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_8987a941-b623-469f-b2ed-9e8f901429bb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_92b2f040-8cae-44ad-8e9b-e4f8334876c5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_8987a941-b623-469f-b2ed-9e8f901429bb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_725b1bf5-16fd-4fb3-bfb6-19d6fed9c4fe" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_48ca2c29-7d6d-41a5-bc57-79708e1700bc" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_725b1bf5-16fd-4fb3-bfb6-19d6fed9c4fe" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_c95efe13-f132-4849-90ce-17c384edac0e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_48ca2c29-7d6d-41a5-bc57-79708e1700bc" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_c95efe13-f132-4849-90ce-17c384edac0e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_b9699afb-f805-42c4-9750-89791f38ba42" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_48ca2c29-7d6d-41a5-bc57-79708e1700bc" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_b9699afb-f805-42c4-9750-89791f38ba42" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_d74cc9d6-c3bf-403d-9fbb-d3f7dc71b2b9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_3b430890-aed5-4bec-b209-3d00c5045b2b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SupplementalCashFlowInformationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_48ca2c29-7d6d-41a5-bc57-79708e1700bc" xlink:to="loc_us-gaap_SupplementalCashFlowInformationAbstract_3b430890-aed5-4bec-b209-3d00c5045b2b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_ac125285-63e1-478b-97f4-095b86177a09" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_3b430890-aed5-4bec-b209-3d00c5045b2b" xlink:to="loc_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_ac125285-63e1-478b-97f4-095b86177a09" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_751df318-a750-40e6-8e52-da9b84d931cb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_48ca2c29-7d6d-41a5-bc57-79708e1700bc" xlink:to="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_751df318-a750-40e6-8e52-da9b84d931cb" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_8ad12fe4-ac24-4ba3-b1bf-cf2df7113eda" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalExpendituresIncurredButNotYetPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_751df318-a750-40e6-8e52-da9b84d931cb" xlink:to="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_8ad12fe4-ac24-4ba3-b1bf-cf2df7113eda" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract_ac5c2ae4-f0a6-4f72-994a-c2d7c41829ec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_48ca2c29-7d6d-41a5-bc57-79708e1700bc" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract_ac5c2ae4-f0a6-4f72-994a-c2d7c41829ec" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_10c60cee-f382-4f81-94aa-f749af3ff57f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract_ac5c2ae4-f0a6-4f72-994a-c2d7c41829ec" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_10c60cee-f382-4f81-94aa-f749af3ff57f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_153aa10b-d27a-4a8c-9788-4e64433addb7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract_ac5c2ae4-f0a6-4f72-994a-c2d7c41829ec" xlink:to="loc_us-gaap_RestrictedCashCurrent_153aa10b-d27a-4a8c-9788-4e64433addb7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CustomerFundsCurrent_c4606e5e-2a31-4a0d-ab8f-b61ff5c037b5" xlink:href="bakkt-20240930.xsd#bakkt_CustomerFundsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract_ac5c2ae4-f0a6-4f72-994a-c2d7c41829ec" xlink:to="loc_bakkt_CustomerFundsCurrent_c4606e5e-2a31-4a0d-ab8f-b61ff5c037b5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepositsAssetsCurrent_ffc9b06d-b8d2-4aef-ac6e-899b0f5363f1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepositsAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsAbstract_ac5c2ae4-f0a6-4f72-994a-c2d7c41829ec" xlink:to="loc_us-gaap_DepositsAssetsCurrent_ffc9b06d-b8d2-4aef-ac6e-899b0f5363f1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_9b8f6bca-1b7d-4fdf-8b5b-b377ad2da8cb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/OrganizationandDescriptionofBusinessDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#OrganizationandDescriptionofBusinessDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/OrganizationandDescriptionofBusinessDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_a2e82b4c-f5bb-4ecd-98bf-0758a5da9ac4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_dbe9cebe-56e4-4a92-9cdd-7a81d3c38bfe" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a2e82b4c-f5bb-4ecd-98bf-0758a5da9ac4" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_dbe9cebe-56e4-4a92-9cdd-7a81d3c38bfe" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_6943a364-cd98-4984-8a6c-cf68a5c7fb97" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_dbe9cebe-56e4-4a92-9cdd-7a81d3c38bfe" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_6943a364-cd98-4984-8a6c-cf68a5c7fb97" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_6943a364-cd98-4984-8a6c-cf68a5c7fb97_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_6943a364-cd98-4984-8a6c-cf68a5c7fb97" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_6943a364-cd98-4984-8a6c-cf68a5c7fb97_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e9553faa-9dc2-416b-a57c-31f5fcdb0676" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_6943a364-cd98-4984-8a6c-cf68a5c7fb97" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e9553faa-9dc2-416b-a57c-31f5fcdb0676" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ApexCryptoLLCMember_a92c8a4e-2779-4bd7-9419-dc4b8baf80f7" xlink:href="bakkt-20240930.xsd#bakkt_ApexCryptoLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e9553faa-9dc2-416b-a57c-31f5fcdb0676" xlink:to="loc_bakkt_ApexCryptoLLCMember_a92c8a4e-2779-4bd7-9419-dc4b8baf80f7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_85968fca-2811-46a1-87f3-95e45558bfac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_a2e82b4c-f5bb-4ecd-98bf-0758a5da9ac4" xlink:to="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_85968fca-2811-46a1-87f3-95e45558bfac" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/SummaryofSignificantAccountingPoliciesDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#SummaryofSignificantAccountingPoliciesDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/SummaryofSignificantAccountingPoliciesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsLineItems_8afb14a8-4fff-49f0-84c4-346c9598f6d6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_3ca9700d-9eb5-4637-bffd-76211f9de257" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfCashAndCashEquivalentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_8afb14a8-4fff-49f0-84c4-346c9598f6d6" xlink:to="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_3ca9700d-9eb5-4637-bffd-76211f9de257" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_22313a04-7e6e-42f5-9d11-53aafce3d87a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_3ca9700d-9eb5-4637-bffd-76211f9de257" xlink:to="loc_us-gaap_StatementClassOfStockAxis_22313a04-7e6e-42f5-9d11-53aafce3d87a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_22313a04-7e6e-42f5-9d11-53aafce3d87a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_22313a04-7e6e-42f5-9d11-53aafce3d87a" xlink:to="loc_us-gaap_ClassOfStockDomain_22313a04-7e6e-42f5-9d11-53aafce3d87a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_5a630a45-024e-484b-ba62-84a812840576" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_22313a04-7e6e-42f5-9d11-53aafce3d87a" xlink:to="loc_us-gaap_ClassOfStockDomain_5a630a45-024e-484b-ba62-84a812840576" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_7141f609-e6fe-4aa8-8fdb-894a400e8287" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_5a630a45-024e-484b-ba62-84a812840576" xlink:to="loc_us-gaap_CommonClassAMember_7141f609-e6fe-4aa8-8fdb-894a400e8287" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonClassVMember_aebca824-105d-4de1-9054-b7489a1aac54" xlink:href="bakkt-20240930.xsd#bakkt_CommonClassVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_5a630a45-024e-484b-ba62-84a812840576" xlink:to="loc_bakkt_CommonClassVMember_aebca824-105d-4de1-9054-b7489a1aac54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_716f240e-199c-4ca6-8b25-e66b9ee12684" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_3ca9700d-9eb5-4637-bffd-76211f9de257" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_716f240e-199c-4ca6-8b25-e66b9ee12684" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_716f240e-199c-4ca6-8b25-e66b9ee12684_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_716f240e-199c-4ca6-8b25-e66b9ee12684" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_716f240e-199c-4ca6-8b25-e66b9ee12684_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_9e321dba-1a6f-4ef4-9a38-5f013813da78" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_716f240e-199c-4ca6-8b25-e66b9ee12684" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_9e321dba-1a6f-4ef4-9a38-5f013813da78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_bdea9815-b527-4b6a-9783-594fa33bce67" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_9e321dba-1a6f-4ef4-9a38-5f013813da78" xlink:to="loc_us-gaap_SubsequentEventMember_bdea9815-b527-4b6a-9783-594fa33bce67" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_812cc59d-69d8-4ae1-bff7-715b400b554d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_3ca9700d-9eb5-4637-bffd-76211f9de257" xlink:to="loc_us-gaap_CreditFacilityAxis_812cc59d-69d8-4ae1-bff7-715b400b554d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_812cc59d-69d8-4ae1-bff7-715b400b554d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_812cc59d-69d8-4ae1-bff7-715b400b554d" xlink:to="loc_us-gaap_CreditFacilityDomain_812cc59d-69d8-4ae1-bff7-715b400b554d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_50ba8f48-b151-4c48-bd9c-62e0bb5e55c4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_812cc59d-69d8-4ae1-bff7-715b400b554d" xlink:to="loc_us-gaap_CreditFacilityDomain_50ba8f48-b151-4c48-bd9c-62e0bb5e55c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_6bb29c90-4498-46ab-aa9e-73e35d251a19" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_50ba8f48-b151-4c48-bd9c-62e0bb5e55c4" xlink:to="loc_us-gaap_LineOfCreditMember_6bb29c90-4498-46ab-aa9e-73e35d251a19" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_94406fbf-b726-4c68-acdb-4958178ae705" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_3ca9700d-9eb5-4637-bffd-76211f9de257" xlink:to="loc_us-gaap_DebtInstrumentAxis_94406fbf-b726-4c68-acdb-4958178ae705" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_94406fbf-b726-4c68-acdb-4958178ae705_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_94406fbf-b726-4c68-acdb-4958178ae705" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_94406fbf-b726-4c68-acdb-4958178ae705_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_4eafb5b5-dd5c-4a71-96af-e6ed16d0b217" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_94406fbf-b726-4c68-acdb-4958178ae705" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_4eafb5b5-dd5c-4a71-96af-e6ed16d0b217" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ICECreditFacilityMember_efc1b09c-7ff5-40c6-8b3c-8f73470e0a56" xlink:href="bakkt-20240930.xsd#bakkt_ICECreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4eafb5b5-dd5c-4a71-96af-e6ed16d0b217" xlink:to="loc_bakkt_ICECreditFacilityMember_efc1b09c-7ff5-40c6-8b3c-8f73470e0a56" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_848c87d1-11b4-4657-bb0c-1a6d2c4c4c0e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_8afb14a8-4fff-49f0-84c4-346c9598f6d6" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_848c87d1-11b4-4657-bb0c-1a6d2c4c4c0e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityNoteStockSplitConversionRatio1_8036a40a-115b-4439-bf76-5c99184043e1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityNoteStockSplitConversionRatio1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_8afb14a8-4fff-49f0-84c4-346c9598f6d6" xlink:to="loc_us-gaap_StockholdersEquityNoteStockSplitConversionRatio1_8036a40a-115b-4439-bf76-5c99184043e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_RestructuringAndRelatedCostExpectedCashSavingsFromPositionsEliminatedNext12Months_4c769aa9-cf78-4c98-b799-a31bff09101f" xlink:href="bakkt-20240930.xsd#bakkt_RestructuringAndRelatedCostExpectedCashSavingsFromPositionsEliminatedNext12Months"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_8afb14a8-4fff-49f0-84c4-346c9598f6d6" xlink:to="loc_bakkt_RestructuringAndRelatedCostExpectedCashSavingsFromPositionsEliminatedNext12Months_4c769aa9-cf78-4c98-b799-a31bff09101f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_bd85d958-af80-4564-8191-9e2724d5ab0e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_8afb14a8-4fff-49f0-84c4-346c9598f6d6" xlink:to="loc_us-gaap_ProfitLoss_bd85d958-af80-4564-8191-9e2724d5ab0e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_8cc39f3f-bceb-494f-af51-906225f200d7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_8afb14a8-4fff-49f0-84c4-346c9598f6d6" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_8cc39f3f-bceb-494f-af51-906225f200d7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_71f0aee2-cf8b-4f17-9cf7-84ba4a7cd885" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_8afb14a8-4fff-49f0-84c4-346c9598f6d6" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_71f0aee2-cf8b-4f17-9cf7-84ba4a7cd885" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent_44352015-a62a-46bb-bb82-2704e0c45575" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_8afb14a8-4fff-49f0-84c4-346c9598f6d6" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent_44352015-a62a-46bb-bb82-2704e0c45575" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_791334dc-1331-4802-bf3f-ec35fa332cc9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_8afb14a8-4fff-49f0-84c4-346c9598f6d6" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_791334dc-1331-4802-bf3f-ec35fa332cc9" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/RevenuefromContractswithCustomersDisaggregationofRevenueDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#RevenuefromContractswithCustomersDisaggregationofRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/RevenuefromContractswithCustomersDisaggregationofRevenueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_0224ef44-e19e-4e62-93a0-d3abf06a70b7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_f56ad528-ed06-4f56-849f-9ba1f5ee95ae" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_0224ef44-e19e-4e62-93a0-d3abf06a70b7" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_f56ad528-ed06-4f56-849f-9ba1f5ee95ae" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_e9eb0c10-0456-4bc7-93bb-4ed032fbec89" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_f56ad528-ed06-4f56-849f-9ba1f5ee95ae" xlink:to="loc_srt_ProductOrServiceAxis_e9eb0c10-0456-4bc7-93bb-4ed032fbec89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_e9eb0c10-0456-4bc7-93bb-4ed032fbec89_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_e9eb0c10-0456-4bc7-93bb-4ed032fbec89" xlink:to="loc_srt_ProductsAndServicesDomain_e9eb0c10-0456-4bc7-93bb-4ed032fbec89_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_0d46bf50-58ed-4087-a884-311516599e9d" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_e9eb0c10-0456-4bc7-93bb-4ed032fbec89" xlink:to="loc_srt_ProductsAndServicesDomain_0d46bf50-58ed-4087-a884-311516599e9d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_TransactionRevenueNetMember_19cf36e2-3640-4eb7-ad06-b6646bd6ec63" xlink:href="bakkt-20240930.xsd#bakkt_TransactionRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0d46bf50-58ed-4087-a884-311516599e9d" xlink:to="loc_bakkt_TransactionRevenueNetMember_19cf36e2-3640-4eb7-ad06-b6646bd6ec63" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_SubscriptionAndServiceRevenueMember_f225ef3c-d419-4e16-b7a3-6aa31fb4b7d9" xlink:href="bakkt-20240930.xsd#bakkt_SubscriptionAndServiceRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0d46bf50-58ed-4087-a884-311516599e9d" xlink:to="loc_bakkt_SubscriptionAndServiceRevenueMember_f225ef3c-d419-4e16-b7a3-6aa31fb4b7d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerSalesChannelAxis_a6170246-d704-47e8-939c-c3ed0fd664f7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerSalesChannelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_f56ad528-ed06-4f56-849f-9ba1f5ee95ae" xlink:to="loc_us-gaap_ContractWithCustomerSalesChannelAxis_a6170246-d704-47e8-939c-c3ed0fd664f7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerSalesChannelDomain_a6170246-d704-47e8-939c-c3ed0fd664f7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerSalesChannelDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ContractWithCustomerSalesChannelAxis_a6170246-d704-47e8-939c-c3ed0fd664f7" xlink:to="loc_us-gaap_ContractWithCustomerSalesChannelDomain_a6170246-d704-47e8-939c-c3ed0fd664f7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerSalesChannelDomain_b67704e5-e99f-4dce-b438-c12e79848df4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerSalesChannelDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ContractWithCustomerSalesChannelAxis_a6170246-d704-47e8-939c-c3ed0fd664f7" xlink:to="loc_us-gaap_ContractWithCustomerSalesChannelDomain_b67704e5-e99f-4dce-b438-c12e79848df4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_SalesChannelLoyaltyRedemptionPlatformMember_b7acadd1-3e25-4d9d-ab80-6d43548f1b79" xlink:href="bakkt-20240930.xsd#bakkt_SalesChannelLoyaltyRedemptionPlatformMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerSalesChannelDomain_b67704e5-e99f-4dce-b438-c12e79848df4" xlink:to="loc_bakkt_SalesChannelLoyaltyRedemptionPlatformMember_b7acadd1-3e25-4d9d-ab80-6d43548f1b79" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_SalesChannelAlternativePaymentPlatformMember_ba632e8c-1637-4d91-8d58-44dde27e72bd" xlink:href="bakkt-20240930.xsd#bakkt_SalesChannelAlternativePaymentPlatformMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerSalesChannelDomain_b67704e5-e99f-4dce-b438-c12e79848df4" xlink:to="loc_bakkt_SalesChannelAlternativePaymentPlatformMember_ba632e8c-1637-4d91-8d58-44dde27e72bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_8e4a2586-e280-4fcd-9aed-376ba6655e3c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_0224ef44-e19e-4e62-93a0-d3abf06a70b7" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_8e4a2586-e280-4fcd-9aed-376ba6655e3c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/RevenuefromContractswithCustomersNarrativeDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#RevenuefromContractswithCustomersNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/RevenuefromContractswithCustomersNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_ad3100fa-47ff-4afe-b930-3fe76cf6df3d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_8232cd3a-f738-4a29-84fb-d47153c4bc0a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_ad3100fa-47ff-4afe-b930-3fe76cf6df3d" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_8232cd3a-f738-4a29-84fb-d47153c4bc0a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_99069213-0c33-40b5-af7f-a4c6b9ffd03f" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_8232cd3a-f738-4a29-84fb-d47153c4bc0a" xlink:to="loc_srt_ProductOrServiceAxis_99069213-0c33-40b5-af7f-a4c6b9ffd03f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_99069213-0c33-40b5-af7f-a4c6b9ffd03f_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_99069213-0c33-40b5-af7f-a4c6b9ffd03f" xlink:to="loc_srt_ProductsAndServicesDomain_99069213-0c33-40b5-af7f-a4c6b9ffd03f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_9e91402c-c2c6-4cca-adce-2357efb0a10e" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_99069213-0c33-40b5-af7f-a4c6b9ffd03f" xlink:to="loc_srt_ProductsAndServicesDomain_9e91402c-c2c6-4cca-adce-2357efb0a10e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_SubscriptionFeesMember_1208ad11-9c41-4478-951b-a9b47dc38355" xlink:href="bakkt-20240930.xsd#bakkt_SubscriptionFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9e91402c-c2c6-4cca-adce-2357efb0a10e" xlink:to="loc_bakkt_SubscriptionFeesMember_1208ad11-9c41-4478-951b-a9b47dc38355" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ServiceFeesMember_014a7971-e7a6-4c17-b1b9-9a3a05329cbd" xlink:href="bakkt-20240930.xsd#bakkt_ServiceFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_9e91402c-c2c6-4cca-adce-2357efb0a10e" xlink:to="loc_bakkt_ServiceFeesMember_014a7971-e7a6-4c17-b1b9-9a3a05329cbd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_a5d883f4-2aee-4f9b-a1c9-6ca6f1b7bcdb" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_8232cd3a-f738-4a29-84fb-d47153c4bc0a" xlink:to="loc_srt_RangeAxis_a5d883f4-2aee-4f9b-a1c9-6ca6f1b7bcdb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_a5d883f4-2aee-4f9b-a1c9-6ca6f1b7bcdb_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_a5d883f4-2aee-4f9b-a1c9-6ca6f1b7bcdb" xlink:to="loc_srt_RangeMember_a5d883f4-2aee-4f9b-a1c9-6ca6f1b7bcdb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_006ea6f6-8bb7-436e-8b21-b74c27b31121" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_a5d883f4-2aee-4f9b-a1c9-6ca6f1b7bcdb" xlink:to="loc_srt_RangeMember_006ea6f6-8bb7-436e-8b21-b74c27b31121" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_539b1614-4822-4857-be1b-fed968815aff" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_006ea6f6-8bb7-436e-8b21-b74c27b31121" xlink:to="loc_srt_MinimumMember_539b1614-4822-4857-be1b-fed968815aff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_d4f9b62a-7a7f-4989-af97-ca484cf0564f" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_006ea6f6-8bb7-436e-8b21-b74c27b31121" xlink:to="loc_srt_MaximumMember_d4f9b62a-7a7f-4989-af97-ca484cf0564f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionAxis_c8e86081-4fb4-44fc-ac15-e7406a042794" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeographicDistributionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_8232cd3a-f738-4a29-84fb-d47153c4bc0a" xlink:to="loc_us-gaap_GeographicDistributionAxis_c8e86081-4fb4-44fc-ac15-e7406a042794" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionDomain_c8e86081-4fb4-44fc-ac15-e7406a042794_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeographicDistributionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GeographicDistributionAxis_c8e86081-4fb4-44fc-ac15-e7406a042794" xlink:to="loc_us-gaap_GeographicDistributionDomain_c8e86081-4fb4-44fc-ac15-e7406a042794_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionDomain_347fbbc5-270c-43f0-962c-06c2742d936b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeographicDistributionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GeographicDistributionAxis_c8e86081-4fb4-44fc-ac15-e7406a042794" xlink:to="loc_us-gaap_GeographicDistributionDomain_347fbbc5-270c-43f0-962c-06c2742d936b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicDistributionForeignMember_7afa5152-3379-437c-aed3-4fc32a69b5be" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeographicDistributionForeignMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GeographicDistributionDomain_347fbbc5-270c-43f0-962c-06c2742d936b" xlink:to="loc_us-gaap_GeographicDistributionForeignMember_7afa5152-3379-437c-aed3-4fc32a69b5be" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_cbd6bd2c-71a4-4c5e-8744-34e0ee144e91" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_ad3100fa-47ff-4afe-b930-3fe76cf6df3d" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_cbd6bd2c-71a4-4c5e-8744-34e0ee144e91" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_5fe753a4-1155-4719-8444-7374be604ac6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_ad3100fa-47ff-4afe-b930-3fe76cf6df3d" xlink:to="loc_us-gaap_NumberOfReportableSegments_5fe753a4-1155-4719-8444-7374be604ac6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_e43f179f-7a55-452d-a200-fea33a0f8534" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_ad3100fa-47ff-4afe-b930-3fe76cf6df3d" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_e43f179f-7a55-452d-a200-fea33a0f8534" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_RevenueRemainingPerformanceObligationRevenueRecognitionPeriod_89128845-485b-4bee-bbe6-e1a5766b7adb" xlink:href="bakkt-20240930.xsd#bakkt_RevenueRemainingPerformanceObligationRevenueRecognitionPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_ad3100fa-47ff-4afe-b930-3fe76cf6df3d" xlink:to="loc_bakkt_RevenueRemainingPerformanceObligationRevenueRecognitionPeriod_89128845-485b-4bee-bbe6-e1a5766b7adb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostAmortization_6390bf70-568a-4eb6-aed8-4a42e6272933" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedContractCostAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_ad3100fa-47ff-4afe-b930-3fe76cf6df3d" xlink:to="loc_us-gaap_CapitalizedContractCostAmortization_6390bf70-568a-4eb6-aed8-4a42e6272933" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/BusinessCombinationandAssetAcquisitionNarrativeDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#BusinessCombinationandAssetAcquisitionNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/BusinessCombinationandAssetAcquisitionNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_3bb49755-b29a-4e02-aeec-62a37dd63fba" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_5da13952-c1b8-4111-aa6a-b6c56341d94f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3bb49755-b29a-4e02-aeec-62a37dd63fba" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_5da13952-c1b8-4111-aa6a-b6c56341d94f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_e41a41a6-8da4-404e-a53d-ee5b31266a5c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_5da13952-c1b8-4111-aa6a-b6c56341d94f" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_e41a41a6-8da4-404e-a53d-ee5b31266a5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e41a41a6-8da4-404e-a53d-ee5b31266a5c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_e41a41a6-8da4-404e-a53d-ee5b31266a5c" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e41a41a6-8da4-404e-a53d-ee5b31266a5c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_497ae995-f5af-4986-9e68-405d5b6d0b7d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_e41a41a6-8da4-404e-a53d-ee5b31266a5c" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_497ae995-f5af-4986-9e68-405d5b6d0b7d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_BumpedFinancialLLCMember_34b0b270-ca5d-4973-82c1-8c2f1d90cba2" xlink:href="bakkt-20240930.xsd#bakkt_BumpedFinancialLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_497ae995-f5af-4986-9e68-405d5b6d0b7d" xlink:to="loc_bakkt_BumpedFinancialLLCMember_34b0b270-ca5d-4973-82c1-8c2f1d90cba2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ApexCryptoLLCMember_9fd6b574-ac8c-4461-898f-d401705735a6" xlink:href="bakkt-20240930.xsd#bakkt_ApexCryptoLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_497ae995-f5af-4986-9e68-405d5b6d0b7d" xlink:to="loc_bakkt_ApexCryptoLLCMember_9fd6b574-ac8c-4461-898f-d401705735a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_9cc6fbff-fa17-441c-a387-2e142f890f09" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityInterestIssuedOrIssuableByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_5da13952-c1b8-4111-aa6a-b6c56341d94f" xlink:to="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_9cc6fbff-fa17-441c-a387-2e142f890f09" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_9cc6fbff-fa17-441c-a387-2e142f890f09_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityInterestIssuedOrIssuableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_9cc6fbff-fa17-441c-a387-2e142f890f09" xlink:to="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_9cc6fbff-fa17-441c-a387-2e142f890f09_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_08fd739a-d1b8-4d48-baaf-43dafec1aed7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityInterestIssuedOrIssuableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_9cc6fbff-fa17-441c-a387-2e142f890f09" xlink:to="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_08fd739a-d1b8-4d48-baaf-43dafec1aed7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_5bac4875-2077-4c25-ab5c-5f9b1f65292f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_08fd739a-d1b8-4d48-baaf-43dafec1aed7" xlink:to="loc_us-gaap_CommonClassAMember_5bac4875-2077-4c25-ab5c-5f9b1f65292f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_7c016979-c21e-4fb2-9b87-692e6b844079" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_5da13952-c1b8-4111-aa6a-b6c56341d94f" xlink:to="loc_srt_RangeAxis_7c016979-c21e-4fb2-9b87-692e6b844079" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_7c016979-c21e-4fb2-9b87-692e6b844079_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_7c016979-c21e-4fb2-9b87-692e6b844079" xlink:to="loc_srt_RangeMember_7c016979-c21e-4fb2-9b87-692e6b844079_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_a7e3b775-1423-469e-99ec-bbc5faf6699f" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_7c016979-c21e-4fb2-9b87-692e6b844079" xlink:to="loc_srt_RangeMember_a7e3b775-1423-469e-99ec-bbc5faf6699f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_3b7fd6e3-b082-4faa-ba5d-eb8fcc092dff" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_a7e3b775-1423-469e-99ec-bbc5faf6699f" xlink:to="loc_srt_MaximumMember_3b7fd6e3-b082-4faa-ba5d-eb8fcc092dff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_fae14b0e-7b99-42e8-82ac-0294e3d45edd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3bb49755-b29a-4e02-aeec-62a37dd63fba" xlink:to="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_fae14b0e-7b99-42e8-82ac-0294e3d45edd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_1a10e0cb-2cff-48fe-b487-fa89f02b9d2f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3bb49755-b29a-4e02-aeec-62a37dd63fba" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_1a10e0cb-2cff-48fe-b487-fa89f02b9d2f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_e7d090e9-80c3-4113-bafe-46cc83302754" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3bb49755-b29a-4e02-aeec-62a37dd63fba" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_e7d090e9-80c3-4113-bafe-46cc83302754" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PaymentsToAcquireBusinessesGrossWorkingCapital_3e0c1f54-4923-4f4c-9db6-bf91951dd44a" xlink:href="bakkt-20240930.xsd#bakkt_PaymentsToAcquireBusinessesGrossWorkingCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3bb49755-b29a-4e02-aeec-62a37dd63fba" xlink:to="loc_bakkt_PaymentsToAcquireBusinessesGrossWorkingCapital_3e0c1f54-4923-4f4c-9db6-bf91951dd44a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_BusinessCombinationContingentConsiderationEquityInterestsIssuedAndIssuable_03ccbbf2-efaf-4542-a53e-e42861a76581" xlink:href="bakkt-20240930.xsd#bakkt_BusinessCombinationContingentConsiderationEquityInterestsIssuedAndIssuable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3bb49755-b29a-4e02-aeec-62a37dd63fba" xlink:to="loc_bakkt_BusinessCombinationContingentConsiderationEquityInterestsIssuedAndIssuable_03ccbbf2-efaf-4542-a53e-e42861a76581" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_dffed1f9-c5e7-4c5c-a105-805aa1d314cd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3bb49755-b29a-4e02-aeec-62a37dd63fba" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_dffed1f9-c5e7-4c5c-a105-805aa1d314cd" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_a52cbc08-d2c0-4463-a84f-85c5c4f2aed6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionsProFormaRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3bb49755-b29a-4e02-aeec-62a37dd63fba" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_a52cbc08-d2c0-4463-a84f-85c5c4f2aed6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_d6e745a3-0926-429a-a823-9f940525f321" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3bb49755-b29a-4e02-aeec-62a37dd63fba" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_d6e745a3-0926-429a-a823-9f940525f321" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_ce26e791-025d-455b-bfbc-4b7644da104d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_3bb49755-b29a-4e02-aeec-62a37dd63fba" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_ce26e791-025d-455b-bfbc-4b7644da104d" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/BusinessCombinationandAssetAcquisitionScheduleofAssetsandLiabilitiesAcquiredDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#BusinessCombinationandAssetAcquisitionScheduleofAssetsandLiabilitiesAcquiredDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/BusinessCombinationandAssetAcquisitionScheduleofAssetsandLiabilitiesAcquiredDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_470e8eb5-1daf-4ee8-9dc9-2e84b5b677dc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_470e8eb5-1daf-4ee8-9dc9-2e84b5b677dc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_3547729c-2cab-4b23-8bdf-a3d4bc03ffb5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_470e8eb5-1daf-4ee8-9dc9-2e84b5b677dc" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_3547729c-2cab-4b23-8bdf-a3d4bc03ffb5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3547729c-2cab-4b23-8bdf-a3d4bc03ffb5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_3547729c-2cab-4b23-8bdf-a3d4bc03ffb5" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3547729c-2cab-4b23-8bdf-a3d4bc03ffb5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_80680bf3-bb28-45fa-ab40-e14d501e18f4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_3547729c-2cab-4b23-8bdf-a3d4bc03ffb5" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_80680bf3-bb28-45fa-ab40-e14d501e18f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ApexCryptoLLCMember_ac806782-d918-4b23-966b-e923b18e8572" xlink:href="bakkt-20240930.xsd#bakkt_ApexCryptoLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_80680bf3-bb28-45fa-ab40-e14d501e18f4" xlink:to="loc_bakkt_ApexCryptoLLCMember_ac806782-d918-4b23-966b-e923b18e8572" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_6ee5ec01-1146-4e99-af7d-3c088115923a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityInterestIssuedOrIssuableByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_470e8eb5-1daf-4ee8-9dc9-2e84b5b677dc" xlink:to="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_6ee5ec01-1146-4e99-af7d-3c088115923a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_6ee5ec01-1146-4e99-af7d-3c088115923a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityInterestIssuedOrIssuableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_6ee5ec01-1146-4e99-af7d-3c088115923a" xlink:to="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_6ee5ec01-1146-4e99-af7d-3c088115923a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_5b00ef03-bb3d-4598-a839-cc443301a246" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityInterestIssuedOrIssuableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EquityInterestIssuedOrIssuableByTypeAxis_6ee5ec01-1146-4e99-af7d-3c088115923a" xlink:to="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_5b00ef03-bb3d-4598-a839-cc443301a246" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_9cd90a1c-78e0-46de-b51b-5143b5fd8ed3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityInterestIssuedOrIssuableTypeDomain_5b00ef03-bb3d-4598-a839-cc443301a246" xlink:to="loc_us-gaap_CommonClassAMember_9cd90a1c-78e0-46de-b51b-5143b5fd8ed3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_ecb96454-0943-498a-8a27-adae06c84211" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_470e8eb5-1daf-4ee8-9dc9-2e84b5b677dc" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_ecb96454-0943-498a-8a27-adae06c84211" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_ecb96454-0943-498a-8a27-adae06c84211_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_ecb96454-0943-498a-8a27-adae06c84211" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_ecb96454-0943-498a-8a27-adae06c84211_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_60bb9b17-62c6-4887-91ad-af91147f6cf3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_ecb96454-0943-498a-8a27-adae06c84211" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_60bb9b17-62c6-4887-91ad-af91147f6cf3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_602eb665-4681-48f8-a1d3-3166b3165057" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TechnologyBasedIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_60bb9b17-62c6-4887-91ad-af91147f6cf3" xlink:to="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_602eb665-4681-48f8-a1d3-3166b3165057" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_0f201bb7-e17b-4206-a780-16c398f1f739" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_60bb9b17-62c6-4887-91ad-af91147f6cf3" xlink:to="loc_us-gaap_CustomerRelationshipsMember_0f201bb7-e17b-4206-a780-16c398f1f739" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_addccfce-40b1-40f3-a928-df740dd62b19" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_addccfce-40b1-40f3-a928-df740dd62b19" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PaymentsToAcquireBusinessesGrossWorkingCapital_b19eaa39-6083-4ca0-9f9c-1608dce7aa01" xlink:href="bakkt-20240930.xsd#bakkt_PaymentsToAcquireBusinessesGrossWorkingCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_bakkt_PaymentsToAcquireBusinessesGrossWorkingCapital_b19eaa39-6083-4ca0-9f9c-1608dce7aa01" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_fb749b0d-f657-49c1-92d0-a35fbc9a10f5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_fb749b0d-f657-49c1-92d0-a35fbc9a10f5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_BusinessCombinationContingentConsiderationEquityInterestsIssuedAndIssuable_0391fd22-e03e-4256-b105-5590ee71ae64" xlink:href="bakkt-20240930.xsd#bakkt_BusinessCombinationContingentConsiderationEquityInterestsIssuedAndIssuable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_bakkt_BusinessCombinationContingentConsiderationEquityInterestsIssuedAndIssuable_0391fd22-e03e-4256-b105-5590ee71ae64" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_32cccc66-15bb-4c0a-a812-d920f2e15a29" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_32cccc66-15bb-4c0a-a812-d920f2e15a29" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets_086c423e-b8a9-487d-831e-d4131e4ff58a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets_086c423e-b8a9-487d-831e-d4131e4ff58a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedSafeguardingAssetPlatformOperatorCryptoAsset_c6656b2b-597f-422e-8ffd-c4f2a00bea5d" xlink:href="bakkt-20240930.xsd#bakkt_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedSafeguardingAssetPlatformOperatorCryptoAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_bakkt_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedSafeguardingAssetPlatformOperatorCryptoAsset_c6656b2b-597f-422e-8ffd-c4f2a00bea5d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentAssets_93ed7480-f2ef-4c96-92d5-d57e879a3d65" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentAssets_93ed7480-f2ef-4c96-92d5-d57e879a3d65" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_6c405ff7-7667-4c2c-9bca-2676d40fd6fc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_6c405ff7-7667-4c2c-9bca-2676d40fd6fc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_e6dced1b-f7af-4dad-bfa8-7e675af7f99a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_us-gaap_Goodwill_e6dced1b-f7af-4dad-bfa8-7e675af7f99a" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_1b3183f4-1bf6-4a8d-99a8-91731153d175" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities_1b3183f4-1bf6-4a8d-99a8-91731153d175" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedSafeguardingLiabilityPlatformOperatorCryptoAsset_25d51fa9-f7ec-4969-ba3e-aa1da85b0c42" xlink:href="bakkt-20240930.xsd#bakkt_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedSafeguardingLiabilityPlatformOperatorCryptoAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_bakkt_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedSafeguardingLiabilityPlatformOperatorCryptoAsset_25d51fa9-f7ec-4969-ba3e-aa1da85b0c42" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_aad41358-0b70-4c2b-959f-9ad2f2981751" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_abb6786e-11bf-4c4e-975d-e7938f6af9e1" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_aad41358-0b70-4c2b-959f-9ad2f2981751" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/GoodwillandIntangibleAssetsNetNarrativeDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#GoodwillandIntangibleAssetsNetNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/GoodwillandIntangibleAssetsNetNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_8dde8ac4-0886-4dc9-b6c4-1211307e5c19" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_5415cc62-38c2-49d6-a887-15879a350e7e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_8dde8ac4-0886-4dc9-b6c4-1211307e5c19" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_5415cc62-38c2-49d6-a887-15879a350e7e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_4dc6edd3-b277-4e0e-90d4-e0076846205f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_5415cc62-38c2-49d6-a887-15879a350e7e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_4dc6edd3-b277-4e0e-90d4-e0076846205f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4dc6edd3-b277-4e0e-90d4-e0076846205f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_4dc6edd3-b277-4e0e-90d4-e0076846205f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4dc6edd3-b277-4e0e-90d4-e0076846205f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_55bbc623-127a-4994-8784-e9d006e43d57" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_4dc6edd3-b277-4e0e-90d4-e0076846205f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_55bbc623-127a-4994-8784-e9d006e43d57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_b7a7fd94-a770-4771-bb05-ec0a4da0f443" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_55bbc623-127a-4994-8784-e9d006e43d57" xlink:to="loc_us-gaap_CustomerRelationshipsMember_b7a7fd94-a770-4771-bb05-ec0a4da0f443" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_910ae39d-dc94-4d72-a48c-7c5e37f52b8e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TechnologyBasedIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_55bbc623-127a-4994-8784-e9d006e43d57" xlink:to="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_910ae39d-dc94-4d72-a48c-7c5e37f52b8e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_02e49aeb-ac92-4ae8-87ec-6fb56ee6003f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_5415cc62-38c2-49d6-a887-15879a350e7e" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_02e49aeb-ac92-4ae8-87ec-6fb56ee6003f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_02e49aeb-ac92-4ae8-87ec-6fb56ee6003f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_02e49aeb-ac92-4ae8-87ec-6fb56ee6003f" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_02e49aeb-ac92-4ae8-87ec-6fb56ee6003f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_b830fed1-4ea5-4eed-ae35-f263c446d7cc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_02e49aeb-ac92-4ae8-87ec-6fb56ee6003f" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_b830fed1-4ea5-4eed-ae35-f263c446d7cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_071a9044-4663-4319-837c-f83d916801a8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TrademarksAndTradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_b830fed1-4ea5-4eed-ae35-f263c446d7cc" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_071a9044-4663-4319-837c-f83d916801a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LicensingAgreementsMember_a10e8533-3e1a-484d-bc1b-17fab4ddbb7a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LicensingAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_b830fed1-4ea5-4eed-ae35-f263c446d7cc" xlink:to="loc_us-gaap_LicensingAgreementsMember_a10e8533-3e1a-484d-bc1b-17fab4ddbb7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_85667e28-04bc-4bca-b396-34d5b1c895f6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_5415cc62-38c2-49d6-a887-15879a350e7e" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_85667e28-04bc-4bca-b396-34d5b1c895f6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_85667e28-04bc-4bca-b396-34d5b1c895f6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_85667e28-04bc-4bca-b396-34d5b1c895f6" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_85667e28-04bc-4bca-b396-34d5b1c895f6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_337a4e70-6a1d-4c0c-8a35-da31997344c9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_85667e28-04bc-4bca-b396-34d5b1c895f6" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_337a4e70-6a1d-4c0c-8a35-da31997344c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ApexCryptoLLCMember_7c554560-921d-4ff1-8a2a-6064a4dc7b75" xlink:href="bakkt-20240930.xsd#bakkt_ApexCryptoLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_337a4e70-6a1d-4c0c-8a35-da31997344c9" xlink:to="loc_bakkt_ApexCryptoLLCMember_7c554560-921d-4ff1-8a2a-6064a4dc7b75" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerSalesChannelAxis_e0fb42ac-18b8-4f27-b9b7-228b039999e1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerSalesChannelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_5415cc62-38c2-49d6-a887-15879a350e7e" xlink:to="loc_us-gaap_ContractWithCustomerSalesChannelAxis_e0fb42ac-18b8-4f27-b9b7-228b039999e1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerSalesChannelDomain_e0fb42ac-18b8-4f27-b9b7-228b039999e1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerSalesChannelDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ContractWithCustomerSalesChannelAxis_e0fb42ac-18b8-4f27-b9b7-228b039999e1" xlink:to="loc_us-gaap_ContractWithCustomerSalesChannelDomain_e0fb42ac-18b8-4f27-b9b7-228b039999e1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerSalesChannelDomain_077a1732-55fe-4700-bc70-ec633e5ac5f8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerSalesChannelDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ContractWithCustomerSalesChannelAxis_e0fb42ac-18b8-4f27-b9b7-228b039999e1" xlink:to="loc_us-gaap_ContractWithCustomerSalesChannelDomain_077a1732-55fe-4700-bc70-ec633e5ac5f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_SalesChannelLoyaltyRedemptionPlatformMember_a8f0cd4c-0ef4-4b21-b88b-55a2324306d4" xlink:href="bakkt-20240930.xsd#bakkt_SalesChannelLoyaltyRedemptionPlatformMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerSalesChannelDomain_077a1732-55fe-4700-bc70-ec633e5ac5f8" xlink:to="loc_bakkt_SalesChannelLoyaltyRedemptionPlatformMember_a8f0cd4c-0ef4-4b21-b88b-55a2324306d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_SalesChannelAlternativePaymentPlatformMember_9f6735bf-24d6-48c9-a401-2d8871ee289c" xlink:href="bakkt-20240930.xsd#bakkt_SalesChannelAlternativePaymentPlatformMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerSalesChannelDomain_077a1732-55fe-4700-bc70-ec633e5ac5f8" xlink:to="loc_bakkt_SalesChannelAlternativePaymentPlatformMember_9f6735bf-24d6-48c9-a401-2d8871ee289c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_1498fcab-fa60-4a56-96b3-a56d28669f27" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ImpairmentOfIntangibleAssetsFinitelived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_8dde8ac4-0886-4dc9-b6c4-1211307e5c19" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_1498fcab-fa60-4a56-96b3-a56d28669f27" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_3ff3f1e4-3656-48b8-b343-94c5ba3305ca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_8dde8ac4-0886-4dc9-b6c4-1211307e5c19" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_3ff3f1e4-3656-48b8-b343-94c5ba3305ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_403b25e2-cf7f-4bcd-9e1f-28ed6b928f0a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_8dde8ac4-0886-4dc9-b6c4-1211307e5c19" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_403b25e2-cf7f-4bcd-9e1f-28ed6b928f0a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_b9c99595-c441-4f9a-b948-c1c7a79547d8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_8dde8ac4-0886-4dc9-b6c4-1211307e5c19" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_b9c99595-c441-4f9a-b948-c1c7a79547d8" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/GoodwillandIntangibleAssetsNetScheduleofIntangibleAssetsDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#GoodwillandIntangibleAssetsNetScheduleofIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/GoodwillandIntangibleAssetsNetScheduleofIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_f9c95197-93a0-420c-9c8a-8c9a88c5b6d8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_634f6186-e628-4424-9908-541ef278453c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_f9c95197-93a0-420c-9c8a-8c9a88c5b6d8" xlink:to="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_634f6186-e628-4424-9908-541ef278453c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_25941a55-1e9e-4128-9c90-27d48601c0b5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_634f6186-e628-4424-9908-541ef278453c" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_25941a55-1e9e-4128-9c90-27d48601c0b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_25941a55-1e9e-4128-9c90-27d48601c0b5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_25941a55-1e9e-4128-9c90-27d48601c0b5" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_25941a55-1e9e-4128-9c90-27d48601c0b5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_efd8d5fa-09ea-4ab8-8c93-8dfc1d4b74ee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_25941a55-1e9e-4128-9c90-27d48601c0b5" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_efd8d5fa-09ea-4ab8-8c93-8dfc1d4b74ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LicensingAgreementsMember_c3ae6e8e-1bf3-4a5e-948b-4b1bd24e066b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LicensingAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_efd8d5fa-09ea-4ab8-8c93-8dfc1d4b74ee" xlink:to="loc_us-gaap_LicensingAgreementsMember_c3ae6e8e-1bf3-4a5e-948b-4b1bd24e066b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_a8b2248f-3e5e-423b-b215-578bb9935064" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TrademarksAndTradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_efd8d5fa-09ea-4ab8-8c93-8dfc1d4b74ee" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_a8b2248f-3e5e-423b-b215-578bb9935064" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_IndefiniteLivedIntangibleAssetsExcludingGoodwillGross_e2d3d960-107c-4e5a-ad0e-7ca02d151d3b" xlink:href="bakkt-20240930.xsd#bakkt_IndefiniteLivedIntangibleAssetsExcludingGoodwillGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_f9c95197-93a0-420c-9c8a-8c9a88c5b6d8" xlink:to="loc_bakkt_IndefiniteLivedIntangibleAssetsExcludingGoodwillGross_e2d3d960-107c-4e5a-ad0e-7ca02d151d3b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_ce3794aa-0236-46d2-a1a3-191b8698a20e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_f9c95197-93a0-420c-9c8a-8c9a88c5b6d8" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_ce3794aa-0236-46d2-a1a3-191b8698a20e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_bdaad7f6-52d7-480a-bb2f-6f9f2c867c8e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_f9c95197-93a0-420c-9c8a-8c9a88c5b6d8" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_bdaad7f6-52d7-480a-bb2f-6f9f2c867c8e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_4b4ea15f-874a-41ae-9a05-664397a3bbf0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_f08978f3-d430-473f-bf43-d3f84953d345" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_4b4ea15f-874a-41ae-9a05-664397a3bbf0" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_f08978f3-d430-473f-bf43-d3f84953d345" xlink:type="arc" order="2" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_f315ac71-f7bb-4c1d-9caa-8ade2e453e4f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_f08978f3-d430-473f-bf43-d3f84953d345" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_f315ac71-f7bb-4c1d-9caa-8ade2e453e4f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_f315ac71-f7bb-4c1d-9caa-8ade2e453e4f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_f315ac71-f7bb-4c1d-9caa-8ade2e453e4f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_f315ac71-f7bb-4c1d-9caa-8ade2e453e4f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_8113d06d-500c-4ef4-bf98-f68496a48185" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_f315ac71-f7bb-4c1d-9caa-8ade2e453e4f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_8113d06d-500c-4ef4-bf98-f68496a48185" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_6673d49e-29b4-4dbc-a7dd-a7d4319bc658" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TechnologyBasedIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_8113d06d-500c-4ef4-bf98-f68496a48185" xlink:to="loc_us-gaap_TechnologyBasedIntangibleAssetsMember_6673d49e-29b4-4dbc-a7dd-a7d4319bc658" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_9c17df55-f339-4376-ab25-a583adb1c9b1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_8113d06d-500c-4ef4-bf98-f68496a48185" xlink:to="loc_us-gaap_CustomerRelationshipsMember_9c17df55-f339-4376-ab25-a583adb1c9b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_f13c2158-02a9-4447-ae1d-5390d57ca5b3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_4b4ea15f-874a-41ae-9a05-664397a3bbf0" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_f13c2158-02a9-4447-ae1d-5390d57ca5b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_d55bf694-6f90-4138-a7e5-c987d1211911" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_4b4ea15f-874a-41ae-9a05-664397a3bbf0" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_d55bf694-6f90-4138-a7e5-c987d1211911" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_2b963640-9396-484c-bb36-258d5fd8f926" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_4b4ea15f-874a-41ae-9a05-664397a3bbf0" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_2b963640-9396-484c-bb36-258d5fd8f926" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_0e57d2ef-f3e7-478e-80ef-338fa629a74e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ImpairmentOfIntangibleAssetsFinitelived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_4b4ea15f-874a-41ae-9a05-664397a3bbf0" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_0e57d2ef-f3e7-478e-80ef-338fa629a74e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_4c573bf2-41b2-49b2-b5a7-1c470f2110ed" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_4b4ea15f-874a-41ae-9a05-664397a3bbf0" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_4c573bf2-41b2-49b2-b5a7-1c470f2110ed" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ConsolidatedBalanceSheetComponentsAccountsReceivableNetDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ConsolidatedBalanceSheetComponentsAccountsReceivableNetDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ConsolidatedBalanceSheetComponentsAccountsReceivableNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_380dccbc-fb3a-451f-b0e1-c0f8bcf5a54c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_a9d21df2-5711-4018-b8bc-6560db19571f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_380dccbc-fb3a-451f-b0e1-c0f8bcf5a54c" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_a9d21df2-5711-4018-b8bc-6560db19571f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_405fb016-d37d-4f8b-84b9-5ea5ae2e0ba0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_a9d21df2-5711-4018-b8bc-6560db19571f" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_405fb016-d37d-4f8b-84b9-5ea5ae2e0ba0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_405fb016-d37d-4f8b-84b9-5ea5ae2e0ba0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_405fb016-d37d-4f8b-84b9-5ea5ae2e0ba0" xlink:to="loc_us-gaap_ReceivableTypeDomain_405fb016-d37d-4f8b-84b9-5ea5ae2e0ba0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_7b8fa7d1-e1c8-48d5-9fc7-614b6fe15366" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_405fb016-d37d-4f8b-84b9-5ea5ae2e0ba0" xlink:to="loc_us-gaap_ReceivableTypeDomain_7b8fa7d1-e1c8-48d5-9fc7-614b6fe15366" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeAccountsReceivableMember_edb0329e-fa94-41af-9890-638abd3dd4e0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TradeAccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_7b8fa7d1-e1c8-48d5-9fc7-614b6fe15366" xlink:to="loc_us-gaap_TradeAccountsReceivableMember_edb0329e-fa94-41af-9890-638abd3dd4e0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_DepositsAtBrokersOrDealersMember_fc04746f-e677-4197-a4f3-f34a486d4603" xlink:href="bakkt-20240930.xsd#bakkt_DepositsAtBrokersOrDealersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_7b8fa7d1-e1c8-48d5-9fc7-614b6fe15366" xlink:to="loc_bakkt_DepositsAtBrokersOrDealersMember_fc04746f-e677-4197-a4f3-f34a486d4603" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CryptoReceivableFromLiquidityProvidersMember_a8fa5776-adcd-4382-9bb4-9cc04e2ed4fc" xlink:href="bakkt-20240930.xsd#bakkt_CryptoReceivableFromLiquidityProvidersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_7b8fa7d1-e1c8-48d5-9fc7-614b6fe15366" xlink:to="loc_bakkt_CryptoReceivableFromLiquidityProvidersMember_a8fa5776-adcd-4382-9bb4-9cc04e2ed4fc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_UnbilledReceivablesCurrentMember_bd365d10-e10c-484b-83d5-2501e8e05928" xlink:href="bakkt-20240930.xsd#bakkt_UnbilledReceivablesCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_7b8fa7d1-e1c8-48d5-9fc7-614b6fe15366" xlink:to="loc_bakkt_UnbilledReceivablesCurrentMember_bd365d10-e10c-484b-83d5-2501e8e05928" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_OtherReceivablesCurrentMember_c20fb3dd-d0ef-4a90-be0b-ee1dc056b3be" xlink:href="bakkt-20240930.xsd#bakkt_OtherReceivablesCurrentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_7b8fa7d1-e1c8-48d5-9fc7-614b6fe15366" xlink:to="loc_bakkt_OtherReceivablesCurrentMember_c20fb3dd-d0ef-4a90-be0b-ee1dc056b3be" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_ce921ef4-fd97-4ab9-adb1-03a8cae7f3db" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableGrossCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_380dccbc-fb3a-451f-b0e1-c0f8bcf5a54c" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_ce921ef4-fd97-4ab9-adb1-03a8cae7f3db" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_945d6dbc-3af9-483d-b1cb-8fe7ee61515d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_380dccbc-fb3a-451f-b0e1-c0f8bcf5a54c" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_945d6dbc-3af9-483d-b1cb-8fe7ee61515d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_b4b51f10-b9bd-4ea5-bc6b-e2946c5e3eca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_380dccbc-fb3a-451f-b0e1-c0f8bcf5a54c" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_b4b51f10-b9bd-4ea5-bc6b-e2946c5e3eca" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ConsolidatedBalanceSheetComponentsPropertyEquipmentandSoftwareNetDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ConsolidatedBalanceSheetComponentsPropertyEquipmentandSoftwareNetDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ConsolidatedBalanceSheetComponentsPropertyEquipmentandSoftwareNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_eeed30af-992b-44c4-ae03-c8eb50350655" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_55775eca-886a-4e81-8ecf-92c33328cc67" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_eeed30af-992b-44c4-ae03-c8eb50350655" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_55775eca-886a-4e81-8ecf-92c33328cc67" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_c2178ddc-fc36-48ce-859b-a2f8263281f9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_55775eca-886a-4e81-8ecf-92c33328cc67" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_c2178ddc-fc36-48ce-859b-a2f8263281f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_c2178ddc-fc36-48ce-859b-a2f8263281f9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_c2178ddc-fc36-48ce-859b-a2f8263281f9" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_c2178ddc-fc36-48ce-859b-a2f8263281f9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_1d62e198-bef3-4e73-9bbc-0cd79f41a1e2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_c2178ddc-fc36-48ce-859b-a2f8263281f9" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_1d62e198-bef3-4e73-9bbc-0cd79f41a1e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SoftwareDevelopmentMember_d603533e-bd34-4dae-87d8-c5d22c9893b7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SoftwareDevelopmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_1d62e198-bef3-4e73-9bbc-0cd79f41a1e2" xlink:to="loc_us-gaap_SoftwareDevelopmentMember_d603533e-bd34-4dae-87d8-c5d22c9893b7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerEquipmentMember_fb5689f7-7d7f-46f6-a3b2-46d1f161e90c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComputerEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_1d62e198-bef3-4e73-9bbc-0cd79f41a1e2" xlink:to="loc_us-gaap_ComputerEquipmentMember_fb5689f7-7d7f-46f6-a3b2-46d1f161e90c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_4e926e20-5c83-4dec-82f9-d439546b194d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_1d62e198-bef3-4e73-9bbc-0cd79f41a1e2" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_4e926e20-5c83-4dec-82f9-d439546b194d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_2563a8bd-d376-446e-a8f1-153b86b0af57" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_eeed30af-992b-44c4-ae03-c8eb50350655" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_2563a8bd-d376-446e-a8f1-153b86b0af57" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_72b8dfa9-4188-4249-96cb-d12fff56200b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_eeed30af-992b-44c4-ae03-c8eb50350655" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_72b8dfa9-4188-4249-96cb-d12fff56200b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_2f2b7670-7cb2-4043-b84f-57382221bf54" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_eeed30af-992b-44c4-ae03-c8eb50350655" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_2f2b7670-7cb2-4043-b84f-57382221bf54" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ConsolidatedBalanceSheetComponentsNarrativeDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ConsolidatedBalanceSheetComponentsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ConsolidatedBalanceSheetComponentsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d522fa4c-9822-4aa2-a5cb-c2ee59e38ff2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_75cd049c-ee95-4e24-a18c-3104f4f73a43" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d522fa4c-9822-4aa2-a5cb-c2ee59e38ff2" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_75cd049c-ee95-4e24-a18c-3104f4f73a43" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis_727b49b2-33d5-4a04-a506-f3d7ddf269f6" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_75cd049c-ee95-4e24-a18c-3104f4f73a43" xlink:to="loc_srt_ConsolidatedEntitiesAxis_727b49b2-33d5-4a04-a506-f3d7ddf269f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_727b49b2-33d5-4a04-a506-f3d7ddf269f6_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidatedEntitiesAxis_727b49b2-33d5-4a04-a506-f3d7ddf269f6" xlink:to="loc_srt_ConsolidatedEntitiesDomain_727b49b2-33d5-4a04-a506-f3d7ddf269f6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain_9f5aabff-67b3-4b8e-8b20-7cc45956a1c3" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidatedEntitiesAxis_727b49b2-33d5-4a04-a506-f3d7ddf269f6" xlink:to="loc_srt_ConsolidatedEntitiesDomain_9f5aabff-67b3-4b8e-8b20-7cc45956a1c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SubsidiariesMember_1f32ecaf-c13d-4ee1-9c3a-1b8740e581c2" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SubsidiariesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidatedEntitiesDomain_9f5aabff-67b3-4b8e-8b20-7cc45956a1c3" xlink:to="loc_srt_SubsidiariesMember_1f32ecaf-c13d-4ee1-9c3a-1b8740e581c2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_7d82aa65-75ce-4657-9f78-0f6c4f871caf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d522fa4c-9822-4aa2-a5cb-c2ee59e38ff2" xlink:to="loc_us-gaap_Depreciation_7d82aa65-75ce-4657-9f78-0f6c4f871caf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedComputerSoftwareAmortization1_d93a47d0-c1ab-42bf-b703-688c09dcfd3d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedComputerSoftwareAmortization1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d522fa4c-9822-4aa2-a5cb-c2ee59e38ff2" xlink:to="loc_us-gaap_CapitalizedComputerSoftwareAmortization1_d93a47d0-c1ab-42bf-b703-688c09dcfd3d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_9feab95c-bad2-41d3-91e2-43437f6c7953" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ImpairmentOfLongLivedAssetsHeldForUse"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d522fa4c-9822-4aa2-a5cb-c2ee59e38ff2" xlink:to="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_9feab95c-bad2-41d3-91e2-43437f6c7953" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ConsolidatedBalanceSheetComponentsOtherCurrentLiabilitiesDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ConsolidatedBalanceSheetComponentsOtherCurrentLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ConsolidatedBalanceSheetComponentsOtherCurrentLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_249d274a-24e9-4b16-9257-a023ce84df39" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e8d35e70-4f5d-47aa-ae06-64686e8ab3c6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_249d274a-24e9-4b16-9257-a023ce84df39" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e8d35e70-4f5d-47aa-ae06-64686e8ab3c6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f56b7359-bd8f-4369-b2e6-991500df2d5d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e8d35e70-4f5d-47aa-ae06-64686e8ab3c6" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f56b7359-bd8f-4369-b2e6-991500df2d5d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_f56b7359-bd8f-4369-b2e6-991500df2d5d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f56b7359-bd8f-4369-b2e6-991500df2d5d" xlink:to="loc_us-gaap_RelatedPartyDomain_f56b7359-bd8f-4369-b2e6-991500df2d5d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_1f723da2-85ed-402a-a75c-47d46eb8f6d9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_f56b7359-bd8f-4369-b2e6-991500df2d5d" xlink:to="loc_us-gaap_RelatedPartyDomain_1f723da2-85ed-402a-a75c-47d46eb8f6d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonrelatedPartyMember_cdebcbe2-d200-473b-8ca8-bc0847d33ee5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NonrelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_1f723da2-85ed-402a-a75c-47d46eb8f6d9" xlink:to="loc_us-gaap_NonrelatedPartyMember_cdebcbe2-d200-473b-8ca8-bc0847d33ee5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_317ce03e-400b-4ac3-b311-1d46375b0578" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_249d274a-24e9-4b16-9257-a023ce84df39" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_317ce03e-400b-4ac3-b311-1d46375b0578" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherSundryLiabilitiesCurrent_9b827fe7-c876-4743-ae3b-1480dd0c37c7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherSundryLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_249d274a-24e9-4b16-9257-a023ce84df39" xlink:to="loc_us-gaap_OtherSundryLiabilitiesCurrent_9b827fe7-c876-4743-ae3b-1480dd0c37c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_ebbde1c0-16dd-4744-8174-3a2185266416" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_249d274a-24e9-4b16-9257-a023ce84df39" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_ebbde1c0-16dd-4744-8174-3a2185266416" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/TaxReceivableAgreementDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#TaxReceivableAgreementDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/TaxReceivableAgreementDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConversionOfStockLineItems_77552232-80ea-4ffd-8e5d-6e044aa8a05a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConversionOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConversionOfStockTable_f131573f-282e-4810-ae3e-8024804aaa3c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConversionOfStockTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConversionOfStockLineItems_77552232-80ea-4ffd-8e5d-6e044aa8a05a" xlink:to="loc_us-gaap_ConversionOfStockTable_f131573f-282e-4810-ae3e-8024804aaa3c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_3ca25538-6163-4841-97a5-b5803aeae728" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConversionOfStockTable_f131573f-282e-4810-ae3e-8024804aaa3c" xlink:to="loc_us-gaap_StatementClassOfStockAxis_3ca25538-6163-4841-97a5-b5803aeae728" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_3ca25538-6163-4841-97a5-b5803aeae728_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_3ca25538-6163-4841-97a5-b5803aeae728" xlink:to="loc_us-gaap_ClassOfStockDomain_3ca25538-6163-4841-97a5-b5803aeae728_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_d51d2176-2515-48fe-ad7a-64fa70e29fe9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_3ca25538-6163-4841-97a5-b5803aeae728" xlink:to="loc_us-gaap_ClassOfStockDomain_d51d2176-2515-48fe-ad7a-64fa70e29fe9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonUnitsOpcoMember_ef1e80d9-0188-4e76-af46-211ec101c53a" xlink:href="bakkt-20240930.xsd#bakkt_CommonUnitsOpcoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_d51d2176-2515-48fe-ad7a-64fa70e29fe9" xlink:to="loc_bakkt_CommonUnitsOpcoMember_ef1e80d9-0188-4e76-af46-211ec101c53a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_7405a83b-2eb4-4120-a906-24f6f4d0717d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_d51d2176-2515-48fe-ad7a-64fa70e29fe9" xlink:to="loc_us-gaap_CommonClassAMember_7405a83b-2eb4-4120-a906-24f6f4d0717d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_TaxReceivableAgreementPercentOfIncomeTaxBenefitsPayableToExchangingStockholders_f637e77d-1847-457e-9302-8b9d24bb943e" xlink:href="bakkt-20240930.xsd#bakkt_TaxReceivableAgreementPercentOfIncomeTaxBenefitsPayableToExchangingStockholders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConversionOfStockLineItems_77552232-80ea-4ffd-8e5d-6e044aa8a05a" xlink:to="loc_bakkt_TaxReceivableAgreementPercentOfIncomeTaxBenefitsPayableToExchangingStockholders_f637e77d-1847-457e-9302-8b9d24bb943e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_eaa3bced-9941-45a0-9726-85283989b0a9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConversionOfStockLineItems_77552232-80ea-4ffd-8e5d-6e044aa8a05a" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_eaa3bced-9941-45a0-9726-85283989b0a9" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/RelatedPartiesDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#RelatedPartiesDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/RelatedPartiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_ee74cbca-b5f6-4dfd-959f-0d7bc0b9a531" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e2439f87-06d2-4c8a-b8b5-f97a75a0a556" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ee74cbca-b5f6-4dfd-959f-0d7bc0b9a531" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e2439f87-06d2-4c8a-b8b5-f97a75a0a556" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_0edb4cae-516b-42e1-b12f-39c714903afd" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e2439f87-06d2-4c8a-b8b5-f97a75a0a556" xlink:to="loc_srt_CounterpartyNameAxis_0edb4cae-516b-42e1-b12f-39c714903afd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_0edb4cae-516b-42e1-b12f-39c714903afd_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_0edb4cae-516b-42e1-b12f-39c714903afd" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_0edb4cae-516b-42e1-b12f-39c714903afd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9eddee77-7435-447a-943b-ee9ea921f622" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_0edb4cae-516b-42e1-b12f-39c714903afd" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9eddee77-7435-447a-943b-ee9ea921f622" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ICEMember_017a4c19-5249-42b3-bfb0-9a3e078333c4" xlink:href="bakkt-20240930.xsd#bakkt_ICEMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9eddee77-7435-447a-943b-ee9ea921f622" xlink:to="loc_bakkt_ICEMember_017a4c19-5249-42b3-bfb0-9a3e078333c4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_IFUSMember_2f832715-77a2-49b6-b9da-301c28953311" xlink:href="bakkt-20240930.xsd#bakkt_IFUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9eddee77-7435-447a-943b-ee9ea921f622" xlink:to="loc_bakkt_IFUSMember_2f832715-77a2-49b6-b9da-301c28953311" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ApexCryptoLLCMember_d46830f4-8cc1-421d-bb2f-347f6cf18bb6" xlink:href="bakkt-20240930.xsd#bakkt_ApexCryptoLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9eddee77-7435-447a-943b-ee9ea921f622" xlink:to="loc_bakkt_ApexCryptoLLCMember_d46830f4-8cc1-421d-bb2f-347f6cf18bb6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_8cbe2d21-6c29-4d82-a17b-cfc9403cdc61" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e2439f87-06d2-4c8a-b8b5-f97a75a0a556" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_8cbe2d21-6c29-4d82-a17b-cfc9403cdc61" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_8cbe2d21-6c29-4d82-a17b-cfc9403cdc61_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_8cbe2d21-6c29-4d82-a17b-cfc9403cdc61" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_8cbe2d21-6c29-4d82-a17b-cfc9403cdc61_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_1c89a26f-ce8f-4fa9-b90f-9bc8d97465a9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_8cbe2d21-6c29-4d82-a17b-cfc9403cdc61" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_1c89a26f-ce8f-4fa9-b90f-9bc8d97465a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_TransitionServicesAgreementMember_fe0a4c6f-f6b5-4af4-bed8-40b69306ef07" xlink:href="bakkt-20240930.xsd#bakkt_TransitionServicesAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_1c89a26f-ce8f-4fa9-b90f-9bc8d97465a9" xlink:to="loc_bakkt_TransitionServicesAgreementMember_fe0a4c6f-f6b5-4af4-bed8-40b69306ef07" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_TripartyAgreementMember_b8f4ca5e-8120-48ed-abd2-548fb3fb4da6" xlink:href="bakkt-20240930.xsd#bakkt_TripartyAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_1c89a26f-ce8f-4fa9-b90f-9bc8d97465a9" xlink:to="loc_bakkt_TripartyAgreementMember_b8f4ca5e-8120-48ed-abd2-548fb3fb4da6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4a8f1217-46ea-4c71-a11e-65849bacc926" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e2439f87-06d2-4c8a-b8b5-f97a75a0a556" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4a8f1217-46ea-4c71-a11e-65849bacc926" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_4a8f1217-46ea-4c71-a11e-65849bacc926_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4a8f1217-46ea-4c71-a11e-65849bacc926" xlink:to="loc_us-gaap_RelatedPartyDomain_4a8f1217-46ea-4c71-a11e-65849bacc926_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_7bf312e8-4b6e-49d3-b1b1-0f42c0f069cc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_4a8f1217-46ea-4c71-a11e-65849bacc926" xlink:to="loc_us-gaap_RelatedPartyDomain_7bf312e8-4b6e-49d3-b1b1-0f42c0f069cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_5c6f4c55-f92e-4dc9-ace7-bda8b7b76687" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_7bf312e8-4b6e-49d3-b1b1-0f42c0f069cc" xlink:to="loc_us-gaap_RelatedPartyMember_5c6f4c55-f92e-4dc9-ace7-bda8b7b76687" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesRelatedParty_56affca0-ee53-4734-af4e-ad20f06ad096" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostsAndExpensesRelatedParty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ee74cbca-b5f6-4dfd-959f-0d7bc0b9a531" xlink:to="loc_us-gaap_CostsAndExpensesRelatedParty_56affca0-ee53-4734-af4e-ad20f06ad096" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_43c323bb-ab38-4e10-9b10-a0b5a90e6c66" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ee74cbca-b5f6-4dfd-959f-0d7bc0b9a531" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_43c323bb-ab38-4e10-9b10-a0b5a90e6c66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_c4bec6b8-2e24-48b9-91de-ee6c4119c9c7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ee74cbca-b5f6-4dfd-959f-0d7bc0b9a531" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_c4bec6b8-2e24-48b9-91de-ee6c4119c9c7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_321a5403-425a-4eb3-9748-3852fcef5b6c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_ee74cbca-b5f6-4dfd-959f-0d7bc0b9a531" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_321a5403-425a-4eb3-9748-3852fcef5b6c" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/WarrantsDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#WarrantsDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/WarrantsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightTable_784441f4-d066-4d1a-aa4a-1216cd0ad9ec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:to="loc_us-gaap_ClassOfWarrantOrRightTable_784441f4-d066-4d1a-aa4a-1216cd0ad9ec" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightAxis_c8bf502c-3cf3-4231-b05d-6829267edc3a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfWarrantOrRightTable_784441f4-d066-4d1a-aa4a-1216cd0ad9ec" xlink:to="loc_us-gaap_ClassOfWarrantOrRightAxis_c8bf502c-3cf3-4231-b05d-6829267edc3a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_c8bf502c-3cf3-4231-b05d-6829267edc3a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_c8bf502c-3cf3-4231-b05d-6829267edc3a" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_c8bf502c-3cf3-4231-b05d-6829267edc3a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_3e1603f0-6672-43e2-a963-8dd392d321cb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_c8bf502c-3cf3-4231-b05d-6829267edc3a" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_3e1603f0-6672-43e2-a963-8dd392d321cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PublicWarrantsMember_e1940aa8-3c50-4337-b5e1-0c15a4899110" xlink:href="bakkt-20240930.xsd#bakkt_PublicWarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_3e1603f0-6672-43e2-a963-8dd392d321cb" xlink:to="loc_bakkt_PublicWarrantsMember_e1940aa8-3c50-4337-b5e1-0c15a4899110" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_4bf0c3d5-5917-4c99-95a1-bca20dee6ebd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WarrantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_3e1603f0-6672-43e2-a963-8dd392d321cb" xlink:to="loc_us-gaap_WarrantMember_4bf0c3d5-5917-4c99-95a1-bca20dee6ebd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PreFundedWarrantsMember_4880d34f-59b5-4770-a026-34e0a9ec5a52" xlink:href="bakkt-20240930.xsd#bakkt_PreFundedWarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_3e1603f0-6672-43e2-a963-8dd392d321cb" xlink:to="loc_bakkt_PreFundedWarrantsMember_4880d34f-59b5-4770-a026-34e0a9ec5a52" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_Class1AndClass2WarrantsMember_dcfe75d5-3bd2-486a-8061-5c1491e3eeb1" xlink:href="bakkt-20240930.xsd#bakkt_Class1AndClass2WarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_3e1603f0-6672-43e2-a963-8dd392d321cb" xlink:to="loc_bakkt_Class1AndClass2WarrantsMember_dcfe75d5-3bd2-486a-8061-5c1491e3eeb1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_Class1WarrantsMember_3dfa0d3b-7f68-477a-8388-5e44fc1f3c1c" xlink:href="bakkt-20240930.xsd#bakkt_Class1WarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_bakkt_Class1AndClass2WarrantsMember_dcfe75d5-3bd2-486a-8061-5c1491e3eeb1" xlink:to="loc_bakkt_Class1WarrantsMember_3dfa0d3b-7f68-477a-8388-5e44fc1f3c1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_Class2WarrantsMember_f43cb790-27fc-4d45-9d08-bf9f7964fa33" xlink:href="bakkt-20240930.xsd#bakkt_Class2WarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_bakkt_Class1AndClass2WarrantsMember_dcfe75d5-3bd2-486a-8061-5c1491e3eeb1" xlink:to="loc_bakkt_Class2WarrantsMember_f43cb790-27fc-4d45-9d08-bf9f7964fa33" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_0240a77a-cbae-4a47-93ad-27d5f00b0587" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfWarrantOrRightTable_784441f4-d066-4d1a-aa4a-1216cd0ad9ec" xlink:to="loc_us-gaap_StatementClassOfStockAxis_0240a77a-cbae-4a47-93ad-27d5f00b0587" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_0240a77a-cbae-4a47-93ad-27d5f00b0587_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_0240a77a-cbae-4a47-93ad-27d5f00b0587" xlink:to="loc_us-gaap_ClassOfStockDomain_0240a77a-cbae-4a47-93ad-27d5f00b0587_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_fed970a3-a471-494c-bb77-072d65251338" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_0240a77a-cbae-4a47-93ad-27d5f00b0587" xlink:to="loc_us-gaap_ClassOfStockDomain_fed970a3-a471-494c-bb77-072d65251338" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_6fd3dd64-bb74-429a-b546-5ad860d75dd8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_fed970a3-a471-494c-bb77-072d65251338" xlink:to="loc_us-gaap_CommonClassAMember_6fd3dd64-bb74-429a-b546-5ad860d75dd8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_d63628b1-8013-4145-8a26-152f170dbbff" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfWarrantOrRightTable_784441f4-d066-4d1a-aa4a-1216cd0ad9ec" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_d63628b1-8013-4145-8a26-152f170dbbff" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_d63628b1-8013-4145-8a26-152f170dbbff_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_d63628b1-8013-4145-8a26-152f170dbbff" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_d63628b1-8013-4145-8a26-152f170dbbff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_62ab7dcc-9da2-40d5-a399-531bafc76009" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_d63628b1-8013-4145-8a26-152f170dbbff" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_62ab7dcc-9da2-40d5-a399-531bafc76009" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ThirdPartyOfferingMember_73227910-a76b-45c8-974d-b8a0e7e10860" xlink:href="bakkt-20240930.xsd#bakkt_ThirdPartyOfferingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_62ab7dcc-9da2-40d5-a399-531bafc76009" xlink:to="loc_bakkt_ThirdPartyOfferingMember_73227910-a76b-45c8-974d-b8a0e7e10860" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ICEOfferingMember_13e58ce3-d65a-4e2c-8681-df905ef802e5" xlink:href="bakkt-20240930.xsd#bakkt_ICEOfferingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_62ab7dcc-9da2-40d5-a399-531bafc76009" xlink:to="loc_bakkt_ICEOfferingMember_13e58ce3-d65a-4e2c-8681-df905ef802e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightOutstanding_b2db5053-7f81-439b-890c-f045480636b0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:to="loc_us-gaap_ClassOfWarrantOrRightOutstanding_b2db5053-7f81-439b-890c-f045480636b0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_a509d232-7675-4f33-b4af-f474769d29d7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:to="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_a509d232-7675-4f33-b4af-f474769d29d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_031f6244-6dcd-4433-ac55-e2c5f583b5c4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_031f6244-6dcd-4433-ac55-e2c5f583b5c4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromWarrantExercises_f43c36ea-0ed1-4ebb-bfee-f782c3ee61b9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromWarrantExercises"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:to="loc_us-gaap_ProceedsFromWarrantExercises_f43c36ea-0ed1-4ebb-bfee-f782c3ee61b9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAdjustmentOfWarrants_7c42c9e9-7de7-4d88-a7a0-360531b435e2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAdjustmentOfWarrants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:to="loc_us-gaap_FairValueAdjustmentOfWarrants_7c42c9e9-7de7-4d88-a7a0-360531b435e2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_9bbe5a32-d3ec-48da-8b05-a0ae52c81bc5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:to="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_9bbe5a32-d3ec-48da-8b05-a0ae52c81bc5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_6362bd67-8c6d-47a9-95c5-78c40c1939f0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:to="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_6362bd67-8c6d-47a9-95c5-78c40c1939f0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ClassOfWarrantOrRightThresholdPeriodAfterClosingForExerciseOfWarrants_ce8a9716-b220-4df1-9e42-d2413afbdb8e" xlink:href="bakkt-20240930.xsd#bakkt_ClassOfWarrantOrRightThresholdPeriodAfterClosingForExerciseOfWarrants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:to="loc_bakkt_ClassOfWarrantOrRightThresholdPeriodAfterClosingForExerciseOfWarrants_ce8a9716-b220-4df1-9e42-d2413afbdb8e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_WarrantLiability_cbbee5a1-dd84-4cb9-aca2-655a8c4bd60e" xlink:href="bakkt-20240930.xsd#bakkt_WarrantLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:to="loc_bakkt_WarrantLiability_cbbee5a1-dd84-4cb9-aca2-655a8c4bd60e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ClassOfWarrantOrRightTerm_280088ec-06ba-40de-8366-ca90d4976503" xlink:href="bakkt-20240930.xsd#bakkt_ClassOfWarrantOrRightTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:to="loc_bakkt_ClassOfWarrantOrRightTerm_280088ec-06ba-40de-8366-ca90d4976503" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantsAndRightsOutstanding_61f2abb3-04b0-490c-a865-108ff421ba38" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WarrantsAndRightsOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:to="loc_us-gaap_WarrantsAndRightsOutstanding_61f2abb3-04b0-490c-a865-108ff421ba38" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_StockIssuedDuringPeriodSharesWarrantsExercised_2000a453-719e-48c7-ad0f-6edda81d4ae4" xlink:href="bakkt-20240930.xsd#bakkt_StockIssuedDuringPeriodSharesWarrantsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_a8b5f22e-5ec2-40a8-9a9e-66a077f70bea" xlink:to="loc_bakkt_StockIssuedDuringPeriodSharesWarrantsExercised_2000a453-719e-48c7-ad0f-6edda81d4ae4" xlink:type="arc" order="11"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/StockholdersEquityNarrativeDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#StockholdersEquityNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/StockholdersEquityNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_fcf7876a-9c8d-403a-952d-213ceb71e23c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_fcf7876a-9c8d-403a-952d-213ceb71e23c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_c1053f7a-1e80-4974-9b37-ce5e216946c9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_fcf7876a-9c8d-403a-952d-213ceb71e23c" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_c1053f7a-1e80-4974-9b37-ce5e216946c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_c1053f7a-1e80-4974-9b37-ce5e216946c9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_c1053f7a-1e80-4974-9b37-ce5e216946c9" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_c1053f7a-1e80-4974-9b37-ce5e216946c9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_5a7143fd-9c5a-49e6-894e-5f1ae3129222" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_c1053f7a-1e80-4974-9b37-ce5e216946c9" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_5a7143fd-9c5a-49e6-894e-5f1ae3129222" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ThirdPartyOfferingMember_b3fcbf80-ebaa-4ea7-a821-2bc0e90a6665" xlink:href="bakkt-20240930.xsd#bakkt_ThirdPartyOfferingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_5a7143fd-9c5a-49e6-894e-5f1ae3129222" xlink:to="loc_bakkt_ThirdPartyOfferingMember_b3fcbf80-ebaa-4ea7-a821-2bc0e90a6665" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ICEOfferingMember_779d0575-fcf1-4f50-8681-b9556c67bfe8" xlink:href="bakkt-20240930.xsd#bakkt_ICEOfferingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_5a7143fd-9c5a-49e6-894e-5f1ae3129222" xlink:to="loc_bakkt_ICEOfferingMember_779d0575-fcf1-4f50-8681-b9556c67bfe8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_18166529-9588-4f47-b143-ce41164d0832" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_fcf7876a-9c8d-403a-952d-213ceb71e23c" xlink:to="loc_us-gaap_StatementClassOfStockAxis_18166529-9588-4f47-b143-ce41164d0832" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_18166529-9588-4f47-b143-ce41164d0832_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_18166529-9588-4f47-b143-ce41164d0832" xlink:to="loc_us-gaap_ClassOfStockDomain_18166529-9588-4f47-b143-ce41164d0832_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_26ff6f64-52b3-4f2c-9090-8eaf33746e09" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_18166529-9588-4f47-b143-ce41164d0832" xlink:to="loc_us-gaap_ClassOfStockDomain_26ff6f64-52b3-4f2c-9090-8eaf33746e09" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_d1036625-2cb7-405b-902f-41c9f0defbc1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_26ff6f64-52b3-4f2c-9090-8eaf33746e09" xlink:to="loc_us-gaap_CommonClassAMember_d1036625-2cb7-405b-902f-41c9f0defbc1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonClassVMember_5ac22898-2c13-4180-96dc-be27edf93fee" xlink:href="bakkt-20240930.xsd#bakkt_CommonClassVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_26ff6f64-52b3-4f2c-9090-8eaf33746e09" xlink:to="loc_bakkt_CommonClassVMember_5ac22898-2c13-4180-96dc-be27edf93fee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PairedInterestsMember_d37a237d-4e26-41e0-8663-57451b144382" xlink:href="bakkt-20240930.xsd#bakkt_PairedInterestsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_26ff6f64-52b3-4f2c-9090-8eaf33746e09" xlink:to="loc_bakkt_PairedInterestsMember_d37a237d-4e26-41e0-8663-57451b144382" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_78dc041e-7a73-47fb-a22b-99a7bec5c6b6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_fcf7876a-9c8d-403a-952d-213ceb71e23c" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_78dc041e-7a73-47fb-a22b-99a7bec5c6b6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_78dc041e-7a73-47fb-a22b-99a7bec5c6b6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_78dc041e-7a73-47fb-a22b-99a7bec5c6b6" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_78dc041e-7a73-47fb-a22b-99a7bec5c6b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4b4cadcd-62e9-4689-b903-cc94145a7ede" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_78dc041e-7a73-47fb-a22b-99a7bec5c6b6" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4b4cadcd-62e9-4689-b903-cc94145a7ede" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_OpcoMember_5ebcf580-a33c-40ac-ac41-6f958d491ba4" xlink:href="bakkt-20240930.xsd#bakkt_OpcoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4b4cadcd-62e9-4689-b903-cc94145a7ede" xlink:to="loc_bakkt_OpcoMember_5ebcf580-a33c-40ac-ac41-6f958d491ba4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConversionOfStockByUniqueDescriptionAxis_d43b6a3f-7e9a-4a13-a0dd-f27699afb4ad" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConversionOfStockByUniqueDescriptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_fcf7876a-9c8d-403a-952d-213ceb71e23c" xlink:to="loc_us-gaap_ConversionOfStockByUniqueDescriptionAxis_d43b6a3f-7e9a-4a13-a0dd-f27699afb4ad" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConversionOfStockNameDomain_d43b6a3f-7e9a-4a13-a0dd-f27699afb4ad_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConversionOfStockNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConversionOfStockByUniqueDescriptionAxis_d43b6a3f-7e9a-4a13-a0dd-f27699afb4ad" xlink:to="loc_us-gaap_ConversionOfStockNameDomain_d43b6a3f-7e9a-4a13-a0dd-f27699afb4ad_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConversionOfStockNameDomain_748d02f1-db1d-49ed-841a-a1b112d8e123" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConversionOfStockNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConversionOfStockByUniqueDescriptionAxis_d43b6a3f-7e9a-4a13-a0dd-f27699afb4ad" xlink:to="loc_us-gaap_ConversionOfStockNameDomain_748d02f1-db1d-49ed-841a-a1b112d8e123" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ConversionOfPairedInterestsIntoClassACommonStockMember_7896e147-c557-4b97-b9e3-282c1bfc2d41" xlink:href="bakkt-20240930.xsd#bakkt_ConversionOfPairedInterestsIntoClassACommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConversionOfStockNameDomain_748d02f1-db1d-49ed-841a-a1b112d8e123" xlink:to="loc_bakkt_ConversionOfPairedInterestsIntoClassACommonStockMember_7896e147-c557-4b97-b9e3-282c1bfc2d41" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightAxis_6f702f7f-1c36-4fa1-a8c1-fc82e9373386" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_fcf7876a-9c8d-403a-952d-213ceb71e23c" xlink:to="loc_us-gaap_ClassOfWarrantOrRightAxis_6f702f7f-1c36-4fa1-a8c1-fc82e9373386" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_6f702f7f-1c36-4fa1-a8c1-fc82e9373386_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_6f702f7f-1c36-4fa1-a8c1-fc82e9373386" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_6f702f7f-1c36-4fa1-a8c1-fc82e9373386_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_1eec8825-7a1b-4d75-84e5-e5054e3b4dc6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_6f702f7f-1c36-4fa1-a8c1-fc82e9373386" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_1eec8825-7a1b-4d75-84e5-e5054e3b4dc6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_WarrantClassCMember_3a727670-42ba-453c-bf34-4a5cb4f114cf" xlink:href="bakkt-20240930.xsd#bakkt_WarrantClassCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_1eec8825-7a1b-4d75-84e5-e5054e3b4dc6" xlink:to="loc_bakkt_WarrantClassCMember_3a727670-42ba-453c-bf34-4a5cb4f114cf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_ca6386e6-6b97-4468-b5c1-9c104000f854" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_fcf7876a-9c8d-403a-952d-213ceb71e23c" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_ca6386e6-6b97-4468-b5c1-9c104000f854" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_ca6386e6-6b97-4468-b5c1-9c104000f854_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_ca6386e6-6b97-4468-b5c1-9c104000f854" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_ca6386e6-6b97-4468-b5c1-9c104000f854_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_541be16f-a059-4ef3-8d19-1ec9f1a9e677" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_ca6386e6-6b97-4468-b5c1-9c104000f854" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_541be16f-a059-4ef3-8d19-1ec9f1a9e677" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_86a31086-1f7b-4f99-9f45-cab6eaa01aa7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_541be16f-a059-4ef3-8d19-1ec9f1a9e677" xlink:to="loc_us-gaap_SubsequentEventMember_86a31086-1f7b-4f99-9f45-cab6eaa01aa7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_3b6e9304-ac6e-4389-897c-e7c93589b42d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PreferredStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_3b6e9304-ac6e-4389-897c-e7c93589b42d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_15a69819-479b-4eae-a173-9b3f99fec505" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_15a69819-479b-4eae-a173-9b3f99fec505" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesIssued_2129719b-9608-446b-beb2-22309ed095b4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PreferredStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_PreferredStockSharesIssued_2129719b-9608-446b-beb2-22309ed095b4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_c74b14e3-f184-4b6a-b773-baade16c2431" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_c74b14e3-f184-4b6a-b773-baade16c2431" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_620f39a7-7396-4f56-b4a4-b13929d45c4d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_620f39a7-7396-4f56-b4a4-b13929d45c4d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_91d98022-1c0b-47eb-9102-c78e005cdf8c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_91d98022-1c0b-47eb-9102-c78e005cdf8c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_8217b838-dd76-49ed-83b5-ad79fefce60d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_CommonStockSharesIssued_8217b838-dd76-49ed-83b5-ad79fefce60d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Dividends_a6540b3e-53cc-4542-b3ef-28307db5ea0d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Dividends"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_Dividends_a6540b3e-53cc-4542-b3ef-28307db5ea0d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_1dfff73f-0a6a-4a50-a9b0-44164438ab7a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_1dfff73f-0a6a-4a50-a9b0-44164438ab7a" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_NoncontrollingInterestOwnershipPercentageByNoncontrollingOwnersWeightedAverage_943ae5d4-34b4-42e7-89b7-0816300b9589" xlink:href="bakkt-20240930.xsd#bakkt_NoncontrollingInterestOwnershipPercentageByNoncontrollingOwnersWeightedAverage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_bakkt_NoncontrollingInterestOwnershipPercentageByNoncontrollingOwnersWeightedAverage_943ae5d4-34b4-42e7-89b7-0816300b9589" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_5cec328a-5063-4d5b-8be9-4362e41f9630" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_5cec328a-5063-4d5b-8be9-4362e41f9630" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_d1cc1ffc-a582-4f51-94a0-a382799a64cf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_d1cc1ffc-a582-4f51-94a0-a382799a64cf" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ClassOfWarrantOrRightVested_79f10dc3-a569-46c3-9d56-63655d175312" xlink:href="bakkt-20240930.xsd#bakkt_ClassOfWarrantOrRightVested"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_bakkt_ClassOfWarrantOrRightVested_79f10dc3-a569-46c3-9d56-63655d175312" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ClassOfWarrantOrRightUnvested_679c5ca3-de86-43b0-af5e-0b84cdc5074b" xlink:href="bakkt-20240930.xsd#bakkt_ClassOfWarrantOrRightUnvested"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_bakkt_ClassOfWarrantOrRightUnvested_679c5ca3-de86-43b0-af5e-0b84cdc5074b" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherSellingGeneralAndAdministrativeExpense_11d20a3e-5727-4910-b2ed-35ddea1ed901" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherSellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_OtherSellingGeneralAndAdministrativeExpense_11d20a3e-5727-4910-b2ed-35ddea1ed901" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_2823ea58-cb7b-4fe9-99e2-fc56a6657fe9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_2823ea58-cb7b-4fe9-99e2-fc56a6657fe9" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_SaleOfStockExpectedConsiderationToBeReceivedOnTransaction_8c123e84-28d3-40ec-81a1-fbefed261057" xlink:href="bakkt-20240930.xsd#bakkt_SaleOfStockExpectedConsiderationToBeReceivedOnTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_f246918e-38ec-4c9b-99ab-723c6828c16f" xlink:to="loc_bakkt_SaleOfStockExpectedConsiderationToBeReceivedOnTransaction_8c123e84-28d3-40ec-81a1-fbefed261057" xlink:type="arc" order="16"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/StockholdersEquityNoncontrollingOwnershipInterestDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#StockholdersEquityNoncontrollingOwnershipInterestDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/StockholdersEquityNoncontrollingOwnershipInterestDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestLineItems_2d7598e7-40f3-4883-b4ae-0b4440232fcb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterestLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestTable_e97f0d70-f420-4ffc-ab6d-1e09e7e24006" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterestTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_MinorityInterestLineItems_2d7598e7-40f3-4883-b4ae-0b4440232fcb" xlink:to="loc_us-gaap_MinorityInterestTable_e97f0d70-f420-4ffc-ab6d-1e09e7e24006" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_931fc7a8-e477-451c-88a9-aa651894af2d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MinorityInterestTable_e97f0d70-f420-4ffc-ab6d-1e09e7e24006" xlink:to="loc_us-gaap_StatementClassOfStockAxis_931fc7a8-e477-451c-88a9-aa651894af2d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_931fc7a8-e477-451c-88a9-aa651894af2d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_931fc7a8-e477-451c-88a9-aa651894af2d" xlink:to="loc_us-gaap_ClassOfStockDomain_931fc7a8-e477-451c-88a9-aa651894af2d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_1027099b-1040-487e-81de-2998cc0c71e2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_931fc7a8-e477-451c-88a9-aa651894af2d" xlink:to="loc_us-gaap_ClassOfStockDomain_1027099b-1040-487e-81de-2998cc0c71e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonClassAMember_b998518c-c55c-44a5-b62c-f7f48c23ccc4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonClassAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_1027099b-1040-487e-81de-2998cc0c71e2" xlink:to="loc_us-gaap_CommonClassAMember_b998518c-c55c-44a5-b62c-f7f48c23ccc4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonClassVMember_3312383c-03ff-43f7-84d2-29aa042ab5f4" xlink:href="bakkt-20240930.xsd#bakkt_CommonClassVMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_1027099b-1040-487e-81de-2998cc0c71e2" xlink:to="loc_bakkt_CommonClassVMember_3312383c-03ff-43f7-84d2-29aa042ab5f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_7dbd6010-aa4b-41ef-ab23-5ad284fdcb06" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MinorityInterestTable_e97f0d70-f420-4ffc-ab6d-1e09e7e24006" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_7dbd6010-aa4b-41ef-ab23-5ad284fdcb06" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_7dbd6010-aa4b-41ef-ab23-5ad284fdcb06_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_7dbd6010-aa4b-41ef-ab23-5ad284fdcb06" xlink:to="loc_us-gaap_EquityComponentDomain_7dbd6010-aa4b-41ef-ab23-5ad284fdcb06_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_cf99f378-5677-4cba-a215-26b4e8da8b38" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_7dbd6010-aa4b-41ef-ab23-5ad284fdcb06" xlink:to="loc_us-gaap_EquityComponentDomain_cf99f378-5677-4cba-a215-26b4e8da8b38" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParentMember_6a64197d-2891-45e1-8d35-8d058549dbe7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_cf99f378-5677-4cba-a215-26b4e8da8b38" xlink:to="loc_us-gaap_ParentMember_6a64197d-2891-45e1-8d35-8d058549dbe7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_814dc5b8-cf5c-4711-821c-15cc182ddd0a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_cf99f378-5677-4cba-a215-26b4e8da8b38" xlink:to="loc_us-gaap_NoncontrollingInterestMember_814dc5b8-cf5c-4711-821c-15cc182ddd0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_4a775b45-1096-4ca2-a272-8df5675b8df9" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MinorityInterestTable_e97f0d70-f420-4ffc-ab6d-1e09e7e24006" xlink:to="loc_dei_LegalEntityAxis_4a775b45-1096-4ca2-a272-8df5675b8df9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4a775b45-1096-4ca2-a272-8df5675b8df9_default" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_4a775b45-1096-4ca2-a272-8df5675b8df9" xlink:to="loc_dei_EntityDomain_4a775b45-1096-4ca2-a272-8df5675b8df9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8a7beab5-06f7-46d0-abab-a4e90dd34e1b" xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_4a775b45-1096-4ca2-a272-8df5675b8df9" xlink:to="loc_dei_EntityDomain_8a7beab5-06f7-46d0-abab-a4e90dd34e1b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_BakktOpcoHoldingsLLCMember_e6ca65e6-bdd5-422c-b153-e607fa3e8091" xlink:href="bakkt-20240930.xsd#bakkt_BakktOpcoHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8a7beab5-06f7-46d0-abab-a4e90dd34e1b" xlink:to="loc_bakkt_BakktOpcoHoldingsLLCMember_e6ca65e6-bdd5-422c-b153-e607fa3e8091" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_f1891c2b-8d81-46a6-a3a0-f2e421673158" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_MinorityInterestTable_e97f0d70-f420-4ffc-ab6d-1e09e7e24006" xlink:to="loc_srt_OwnershipAxis_f1891c2b-8d81-46a6-a3a0-f2e421673158" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_f1891c2b-8d81-46a6-a3a0-f2e421673158_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_f1891c2b-8d81-46a6-a3a0-f2e421673158" xlink:to="loc_srt_OwnershipDomain_f1891c2b-8d81-46a6-a3a0-f2e421673158_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_c6858b3d-1670-48cb-bf35-99fb6e58e3af" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_f1891c2b-8d81-46a6-a3a0-f2e421673158" xlink:to="loc_srt_OwnershipDomain_c6858b3d-1670-48cb-bf35-99fb6e58e3af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_BakktOpcoHoldingsLLCMember_2d3bfc1e-89a6-4494-8246-18fb49c952da" xlink:href="bakkt-20240930.xsd#bakkt_BakktOpcoHoldingsLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_c6858b3d-1670-48cb-bf35-99fb6e58e3af" xlink:to="loc_bakkt_BakktOpcoHoldingsLLCMember_2d3bfc1e-89a6-4494-8246-18fb49c952da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonUnitOutstanding_d5ae3b15-6066-4cba-83a9-f77adcfd4461" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonUnitOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_2d7598e7-40f3-4883-b4ae-0b4440232fcb" xlink:to="loc_us-gaap_CommonUnitOutstanding_d5ae3b15-6066-4cba-83a9-f77adcfd4461" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_cff2b62d-958d-4a91-a613-a7584fbf3417" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_2d7598e7-40f3-4883-b4ae-0b4440232fcb" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_cff2b62d-958d-4a91-a613-a7584fbf3417" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_8026203c-e7ef-433f-bee5-e7279f0c5c56" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_2d7598e7-40f3-4883-b4ae-0b4440232fcb" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_8026203c-e7ef-433f-bee5-e7279f0c5c56" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_NoncontrollingInterestOwnershipPercentage_217601ee-40a7-4ce9-a58f-9da1eebadba5" xlink:href="bakkt-20240930.xsd#bakkt_NoncontrollingInterestOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MinorityInterestLineItems_2d7598e7-40f3-4883-b4ae-0b4440232fcb" xlink:to="loc_bakkt_NoncontrollingInterestOwnershipPercentage_217601ee-40a7-4ce9-a58f-9da1eebadba5" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ShareBasedandUnitBasedCompensationNarrativeDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ShareBasedandUnitBasedCompensationNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ShareBasedandUnitBasedCompensationNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_05e4ec98-3966-44db-97ce-ac2e13132a92" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_05e4ec98-3966-44db-97ce-ac2e13132a92" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_7ab0a27f-6d10-4771-829a-f996e6e91c2c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_05e4ec98-3966-44db-97ce-ac2e13132a92" xlink:to="loc_us-gaap_PlanNameAxis_7ab0a27f-6d10-4771-829a-f996e6e91c2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_7ab0a27f-6d10-4771-829a-f996e6e91c2c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_7ab0a27f-6d10-4771-829a-f996e6e91c2c" xlink:to="loc_us-gaap_PlanNameDomain_7ab0a27f-6d10-4771-829a-f996e6e91c2c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_b3edf02a-6a13-4d44-9f96-f6338450f30c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_7ab0a27f-6d10-4771-829a-f996e6e91c2c" xlink:to="loc_us-gaap_PlanNameDomain_b3edf02a-6a13-4d44-9f96-f6338450f30c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_A2021OmnibusIncentivePlanMember_65981447-ee2f-4b84-beaa-ea6090af8de2" xlink:href="bakkt-20240930.xsd#bakkt_A2021OmnibusIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_b3edf02a-6a13-4d44-9f96-f6338450f30c" xlink:to="loc_bakkt_A2021OmnibusIncentivePlanMember_65981447-ee2f-4b84-beaa-ea6090af8de2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_OpcoPlanMember_5bedccdb-5f93-4ce7-b19f-67c552cc1045" xlink:href="bakkt-20240930.xsd#bakkt_OpcoPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_b3edf02a-6a13-4d44-9f96-f6338450f30c" xlink:to="loc_bakkt_OpcoPlanMember_5bedccdb-5f93-4ce7-b19f-67c552cc1045" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_0bf9cfe5-02ad-469e-9e9f-2cd8a95fb694" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_05e4ec98-3966-44db-97ce-ac2e13132a92" xlink:to="loc_us-gaap_AwardTypeAxis_0bf9cfe5-02ad-469e-9e9f-2cd8a95fb694" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0bf9cfe5-02ad-469e-9e9f-2cd8a95fb694_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_0bf9cfe5-02ad-469e-9e9f-2cd8a95fb694" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0bf9cfe5-02ad-469e-9e9f-2cd8a95fb694_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_def94b18-99f4-433b-ad38-f539adabebd8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_0bf9cfe5-02ad-469e-9e9f-2cd8a95fb694" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_def94b18-99f4-433b-ad38-f539adabebd8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember_f21b6789-b06f-415b-a6ac-6547d1f80c46" xlink:href="bakkt-20240930.xsd#bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_def94b18-99f4-433b-ad38-f539adabebd8" xlink:to="loc_bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember_f21b6789-b06f-415b-a6ac-6547d1f80c46" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_f93f5edb-d90a-4d7d-a5fc-a7c1743b619b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember_f21b6789-b06f-415b-a6ac-6547d1f80c46" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_f93f5edb-d90a-4d7d-a5fc-a7c1743b619b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PerformanceStockUnitsPSUsMember_f38c724d-7ed1-4bbd-893d-8cb12b25eaac" xlink:href="bakkt-20240930.xsd#bakkt_PerformanceStockUnitsPSUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember_f21b6789-b06f-415b-a6ac-6547d1f80c46" xlink:to="loc_bakkt_PerformanceStockUnitsPSUsMember_f38c724d-7ed1-4bbd-893d-8cb12b25eaac" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PreferredIncentiveUnitsMember_8170a343-adaa-44a3-b506-8ba1b4e61f26" xlink:href="bakkt-20240930.xsd#bakkt_PreferredIncentiveUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_def94b18-99f4-433b-ad38-f539adabebd8" xlink:to="loc_bakkt_PreferredIncentiveUnitsMember_8170a343-adaa-44a3-b506-8ba1b4e61f26" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonIncentiveUnitsMember_9ef7a466-5493-4fa2-b695-dd0d16f6fe39" xlink:href="bakkt-20240930.xsd#bakkt_CommonIncentiveUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_def94b18-99f4-433b-ad38-f539adabebd8" xlink:to="loc_bakkt_CommonIncentiveUnitsMember_9ef7a466-5493-4fa2-b695-dd0d16f6fe39" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis_f9136849-f8ee-4a37-89d9-5a15cf49687f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_05e4ec98-3966-44db-97ce-ac2e13132a92" xlink:to="loc_us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis_f9136849-f8ee-4a37-89d9-5a15cf49687f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain_f9136849-f8ee-4a37-89d9-5a15cf49687f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis_f9136849-f8ee-4a37-89d9-5a15cf49687f" xlink:to="loc_us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain_f9136849-f8ee-4a37-89d9-5a15cf49687f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain_4d885f65-066e-4c0a-83a8-7aae6e045278" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis_f9136849-f8ee-4a37-89d9-5a15cf49687f" xlink:to="loc_us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain_4d885f65-066e-4c0a-83a8-7aae6e045278" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationShareBasedPaymentsMember_daa5f4b3-038d-4550-a783-62edb0a50f03" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredCompensationShareBasedPaymentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain_4d885f65-066e-4c0a-83a8-7aae6e045278" xlink:to="loc_us-gaap_DeferredCompensationShareBasedPaymentsMember_daa5f4b3-038d-4550-a783-62edb0a50f03" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_ce94367d-206b-4274-aa8c-a9a2cf86c2ee" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_05e4ec98-3966-44db-97ce-ac2e13132a92" xlink:to="loc_srt_RangeAxis_ce94367d-206b-4274-aa8c-a9a2cf86c2ee" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_ce94367d-206b-4274-aa8c-a9a2cf86c2ee_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_ce94367d-206b-4274-aa8c-a9a2cf86c2ee" xlink:to="loc_srt_RangeMember_ce94367d-206b-4274-aa8c-a9a2cf86c2ee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_3f42d1f5-6849-4536-adb3-46ccf7f47201" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_ce94367d-206b-4274-aa8c-a9a2cf86c2ee" xlink:to="loc_srt_RangeMember_3f42d1f5-6849-4536-adb3-46ccf7f47201" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_f7b2c0b4-0346-4912-a8fe-66485aecae96" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_3f42d1f5-6849-4536-adb3-46ccf7f47201" xlink:to="loc_srt_MinimumMember_f7b2c0b4-0346-4912-a8fe-66485aecae96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_7c0a5a0f-36a0-4932-a97b-d67707787e19" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_3f42d1f5-6849-4536-adb3-46ccf7f47201" xlink:to="loc_srt_MaximumMember_7c0a5a0f-36a0-4932-a97b-d67707787e19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingAxis_68dbb3a7-5542-4f4e-b30a-b5b28442ebe1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VestingAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_05e4ec98-3966-44db-97ce-ac2e13132a92" xlink:to="loc_us-gaap_VestingAxis_68dbb3a7-5542-4f4e-b30a-b5b28442ebe1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingDomain_68dbb3a7-5542-4f4e-b30a-b5b28442ebe1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VestingDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VestingAxis_68dbb3a7-5542-4f4e-b30a-b5b28442ebe1" xlink:to="loc_us-gaap_VestingDomain_68dbb3a7-5542-4f4e-b30a-b5b28442ebe1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VestingDomain_4e6ff408-7039-41e0-9c91-92cc10998807" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VestingDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VestingAxis_68dbb3a7-5542-4f4e-b30a-b5b28442ebe1" xlink:to="loc_us-gaap_VestingDomain_4e6ff408-7039-41e0-9c91-92cc10998807" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationAwardTrancheOneMember_4f822a77-b094-4122-bddd-01fbc0410ef1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationAwardTrancheOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_4e6ff408-7039-41e0-9c91-92cc10998807" xlink:to="loc_us-gaap_ShareBasedCompensationAwardTrancheOneMember_4f822a77-b094-4122-bddd-01fbc0410ef1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_6a759544-8d20-4864-9a28-229594a68eb4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationAwardTrancheTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_4e6ff408-7039-41e0-9c91-92cc10998807" xlink:to="loc_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_6a759544-8d20-4864-9a28-229594a68eb4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationAwardTrancheThreeMember_f1f9e0a1-e686-42b0-864e-94e5afc94ecd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationAwardTrancheThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_4e6ff408-7039-41e0-9c91-92cc10998807" xlink:to="loc_us-gaap_ShareBasedCompensationAwardTrancheThreeMember_f1f9e0a1-e686-42b0-864e-94e5afc94ecd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_f5b3bf8d-2646-4c64-907c-af6a43deffe0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_05e4ec98-3966-44db-97ce-ac2e13132a92" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_f5b3bf8d-2646-4c64-907c-af6a43deffe0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_f5b3bf8d-2646-4c64-907c-af6a43deffe0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_f5b3bf8d-2646-4c64-907c-af6a43deffe0" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_f5b3bf8d-2646-4c64-907c-af6a43deffe0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_af78e411-625e-4b80-9947-064e04a9b934" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_f5b3bf8d-2646-4c64-907c-af6a43deffe0" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_af78e411-625e-4b80-9947-064e04a9b934" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_OpcoMember_567af32b-c2c3-4dde-8d12-e7d0d543506d" xlink:href="bakkt-20240930.xsd#bakkt_OpcoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_af78e411-625e-4b80-9947-064e04a9b934" xlink:to="loc_bakkt_OpcoMember_567af32b-c2c3-4dde-8d12-e7d0d543506d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_271f17c0-fd2a-48c4-9628-3efff589c0f7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_271f17c0-fd2a-48c4-9628-3efff589c0f7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonStockCapitalSharesReservedForFutureIssuancePeriodIncreaseDecrease_1e3e60fc-e290-4439-87b0-3f2a45b568d3" xlink:href="bakkt-20240930.xsd#bakkt_CommonStockCapitalSharesReservedForFutureIssuancePeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_bakkt_CommonStockCapitalSharesReservedForFutureIssuancePeriodIncreaseDecrease_1e3e60fc-e290-4439-87b0-3f2a45b568d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_ec4c1fe1-6e05-4fa6-9c3c-cbac4c73d186" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_ec4c1fe1-6e05-4fa6-9c3c-cbac4c73d186" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_7db4d7a8-4ac4-45b1-b662-81936022448d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_7db4d7a8-4ac4-45b1-b662-81936022448d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_059cc237-f005-4829-8414-a078b0b79ee6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_059cc237-f005-4829-8414-a078b0b79ee6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_51893168-7fb9-43ad-be7b-f2908971e96f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_51893168-7fb9-43ad-be7b-f2908971e96f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost_3b0d1eda-e557-4532-8247-49882703ebd5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost_3b0d1eda-e557-4532-8247-49882703ebd5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ShareBasedPaymentArrangementAcceleratedCostReversalDueToForfeitures_f5b64345-3cf1-48ae-8e7a-20e797dd63f9" xlink:href="bakkt-20240930.xsd#bakkt_ShareBasedPaymentArrangementAcceleratedCostReversalDueToForfeitures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_bakkt_ShareBasedPaymentArrangementAcceleratedCostReversalDueToForfeitures_f5b64345-3cf1-48ae-8e7a-20e797dd63f9" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ShareBasedCompensationArrangementByShareBasedPaymentAwardActualUnitsEarnedPercentageOfTargetUnits_a4df2dd3-de43-45b7-8c82-d34e842d3a12" xlink:href="bakkt-20240930.xsd#bakkt_ShareBasedCompensationArrangementByShareBasedPaymentAwardActualUnitsEarnedPercentageOfTargetUnits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_bakkt_ShareBasedCompensationArrangementByShareBasedPaymentAwardActualUnitsEarnedPercentageOfTargetUnits_a4df2dd3-de43-45b7-8c82-d34e842d3a12" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_533e95b0-6349-482f-b239-f6607eaf6d78" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_533e95b0-6349-482f-b239-f6607eaf6d78" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_e491a915-c0d7-476a-a084-11165afc4ff3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_e491a915-c0d7-476a-a084-11165afc4ff3" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_DeferredCompensationArrangementWithIndividualSharesOutstanding_b7c78c17-99bf-49d8-b711-ce64f3b7cc67" xlink:href="bakkt-20240930.xsd#bakkt_DeferredCompensationArrangementWithIndividualSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_bakkt_DeferredCompensationArrangementWithIndividualSharesOutstanding_b7c78c17-99bf-49d8-b711-ce64f3b7cc67" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_2b327355-4da7-47df-8537-23a59fde85c8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_2b327355-4da7-47df-8537-23a59fde85c8" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued_bbdf052d-ca81-4276-a663-c21a4d5a60c7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued_bbdf052d-ca81-4276-a663-c21a4d5a60c7" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualDistributionPaid_fcc5edb0-eac7-44e8-97f8-429fe33e3964" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredCompensationArrangementWithIndividualDistributionPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f016e3f3-70a5-4375-8899-5595509d5c9d" xlink:to="loc_us-gaap_DeferredCompensationArrangementWithIndividualDistributionPaid_fcc5edb0-eac7-44e8-97f8-429fe33e3964" xlink:type="arc" order="14"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ShareBasedandUnitBasedCompensationRSUPSUActivityDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ShareBasedandUnitBasedCompensationRSUPSUActivityDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ShareBasedandUnitBasedCompensationRSUPSUActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0e10c1c0-b322-48fc-9f4b-a45db0f29852" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_528979b3-cb9e-44be-a10b-1ff79ea7ac89" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0e10c1c0-b322-48fc-9f4b-a45db0f29852" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_528979b3-cb9e-44be-a10b-1ff79ea7ac89" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_b9413447-adc0-4879-8b3c-43912825732e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_528979b3-cb9e-44be-a10b-1ff79ea7ac89" xlink:to="loc_us-gaap_AwardTypeAxis_b9413447-adc0-4879-8b3c-43912825732e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_b9413447-adc0-4879-8b3c-43912825732e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_b9413447-adc0-4879-8b3c-43912825732e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_b9413447-adc0-4879-8b3c-43912825732e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_ce049ffa-0323-476f-b443-5ef6f09c6753" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_b9413447-adc0-4879-8b3c-43912825732e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_ce049ffa-0323-476f-b443-5ef6f09c6753" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember_132f1c8c-d96d-4f2a-8b2d-3e55b02bdbc3" xlink:href="bakkt-20240930.xsd#bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_ce049ffa-0323-476f-b443-5ef6f09c6753" xlink:to="loc_bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember_132f1c8c-d96d-4f2a-8b2d-3e55b02bdbc3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e06a80e0-13f7-4d3d-9ab1-46e9d4142e80" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0e10c1c0-b322-48fc-9f4b-a45db0f29852" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e06a80e0-13f7-4d3d-9ab1-46e9d4142e80" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_7fbf4fee-9251-410e-8882-2f1a4107a4eb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e06a80e0-13f7-4d3d-9ab1-46e9d4142e80" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_7fbf4fee-9251-410e-8882-2f1a4107a4eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_88596962-9f9a-4675-9de0-5d150239a210" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e06a80e0-13f7-4d3d-9ab1-46e9d4142e80" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_88596962-9f9a-4675-9de0-5d150239a210" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_019db6be-52a5-44ab-b996-d416a46f1e2a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e06a80e0-13f7-4d3d-9ab1-46e9d4142e80" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_019db6be-52a5-44ab-b996-d416a46f1e2a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_7d9325d7-20be-46be-a336-ff13d3fb7083" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e06a80e0-13f7-4d3d-9ab1-46e9d4142e80" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_7d9325d7-20be-46be-a336-ff13d3fb7083" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_5f1fe222-9742-4f64-9801-4631ab2bf65a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_96a2d490-0f6b-4152-aa4f-2a7b136ad241" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0e10c1c0-b322-48fc-9f4b-a45db0f29852" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_96a2d490-0f6b-4152-aa4f-2a7b136ad241" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_3ab04ff3-ff24-496d-8daa-fffb91066a5f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0e10c1c0-b322-48fc-9f4b-a45db0f29852" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_3ab04ff3-ff24-496d-8daa-fffb91066a5f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_dd804977-34f3-4b28-a8f6-cf98bbe7f697" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_3ab04ff3-ff24-496d-8daa-fffb91066a5f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_dd804977-34f3-4b28-a8f6-cf98bbe7f697" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_3bab34d6-4255-473e-b996-2961c3bb875b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_3ab04ff3-ff24-496d-8daa-fffb91066a5f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_3bab34d6-4255-473e-b996-2961c3bb875b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_71b3faca-dfe4-4519-ae16-1e8a9e943be5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract_a7dd318a-75c8-4aaa-8957-5cb5727b13c5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0e10c1c0-b322-48fc-9f4b-a45db0f29852" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract_a7dd318a-75c8-4aaa-8957-5cb5727b13c5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueGranted_484e41ab-26ee-45e4-bf1b-524d735985d0" xlink:href="bakkt-20240930.xsd#bakkt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueGranted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract_a7dd318a-75c8-4aaa-8957-5cb5727b13c5" xlink:to="loc_bakkt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueGranted_484e41ab-26ee-45e4-bf1b-524d735985d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_bd2c2994-49c0-45df-957c-29648a2de591" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0e10c1c0-b322-48fc-9f4b-a45db0f29852" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_bd2c2994-49c0-45df-957c-29648a2de591" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ShareBasedandUnitBasedCompensationCompensationExpenseDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ShareBasedandUnitBasedCompensationCompensationExpenseDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ShareBasedandUnitBasedCompensationCompensationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_23a7bfdb-5397-41ef-a215-032668c8f2ed" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_9781e5a8-c37f-42a7-9d8d-6169d6306036" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_23a7bfdb-5397-41ef-a215-032668c8f2ed" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_9781e5a8-c37f-42a7-9d8d-6169d6306036" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_fafe45c2-2500-4cda-8b46-4862df794712" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_9781e5a8-c37f-42a7-9d8d-6169d6306036" xlink:to="loc_us-gaap_AwardTypeAxis_fafe45c2-2500-4cda-8b46-4862df794712" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_fafe45c2-2500-4cda-8b46-4862df794712_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_fafe45c2-2500-4cda-8b46-4862df794712" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_fafe45c2-2500-4cda-8b46-4862df794712_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_606acd06-3907-40b3-8c9b-65bc3ee82149" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_fafe45c2-2500-4cda-8b46-4862df794712" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_606acd06-3907-40b3-8c9b-65bc3ee82149" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonIncentiveUnitsMember_d7c75158-5fc9-48d0-99fd-ff697599d736" xlink:href="bakkt-20240930.xsd#bakkt_CommonIncentiveUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_606acd06-3907-40b3-8c9b-65bc3ee82149" xlink:to="loc_bakkt_CommonIncentiveUnitsMember_d7c75158-5fc9-48d0-99fd-ff697599d736" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_c0915616-f264-4990-aa0a-978152b9f7d3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_23a7bfdb-5397-41ef-a215-032668c8f2ed" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_c0915616-f264-4990-aa0a-978152b9f7d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense_6a5a3539-3ea5-416f-a4ab-2b329dba4b58" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_23a7bfdb-5397-41ef-a215-032668c8f2ed" xlink:to="loc_us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense_6a5a3539-3ea5-416f-a4ab-2b329dba4b58" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ShareBasedPaymentArrangementExpenseAndDeferredCompensationArrangementWithIndividualCompensationExpenseNetOfForfeitures_e6439942-96f1-4fb0-b230-236c236f8474" xlink:href="bakkt-20240930.xsd#bakkt_ShareBasedPaymentArrangementExpenseAndDeferredCompensationArrangementWithIndividualCompensationExpenseNetOfForfeitures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_23a7bfdb-5397-41ef-a215-032668c8f2ed" xlink:to="loc_bakkt_ShareBasedPaymentArrangementExpenseAndDeferredCompensationArrangementWithIndividualCompensationExpenseNetOfForfeitures_e6439942-96f1-4fb0-b230-236c236f8474" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/ShareBasedandUnitBasedCompensationUnitActivityDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#ShareBasedandUnitBasedCompensationUnitActivityDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/ShareBasedandUnitBasedCompensationUnitActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6700c708-31f5-4a85-9201-456f949a379d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_a6eb235d-bdb3-4028-9045-7aea6a0cd332" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6700c708-31f5-4a85-9201-456f949a379d" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_a6eb235d-bdb3-4028-9045-7aea6a0cd332" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_f5c21fec-995a-40f1-9b4c-3050f71df59b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_a6eb235d-bdb3-4028-9045-7aea6a0cd332" xlink:to="loc_us-gaap_AwardTypeAxis_f5c21fec-995a-40f1-9b4c-3050f71df59b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f5c21fec-995a-40f1-9b4c-3050f71df59b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_f5c21fec-995a-40f1-9b4c-3050f71df59b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_f5c21fec-995a-40f1-9b4c-3050f71df59b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0e83b815-1baa-4fa1-bece-54d109ec31f1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_f5c21fec-995a-40f1-9b4c-3050f71df59b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0e83b815-1baa-4fa1-bece-54d109ec31f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonIncentiveUnitsMember_0f6b5723-4c81-4083-a3dc-12ac727e445a" xlink:href="bakkt-20240930.xsd#bakkt_CommonIncentiveUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0e83b815-1baa-4fa1-bece-54d109ec31f1" xlink:to="loc_bakkt_CommonIncentiveUnitsMember_0f6b5723-4c81-4083-a3dc-12ac727e445a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_adb4d260-1a19-4450-865d-69523b1d8bae" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6700c708-31f5-4a85-9201-456f949a379d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_adb4d260-1a19-4450-865d-69523b1d8bae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_05afcaa3-a1bd-46e2-95de-2cbe1f147a40" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_adb4d260-1a19-4450-865d-69523b1d8bae" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_05afcaa3-a1bd-46e2-95de-2cbe1f147a40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_17b98a40-7c56-4022-bf79-dafd11043d94" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_adb4d260-1a19-4450-865d-69523b1d8bae" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_17b98a40-7c56-4022-bf79-dafd11043d94" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_3fa4a08e-8135-448b-8fe8-a603d8f9180c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_adb4d260-1a19-4450-865d-69523b1d8bae" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_3fa4a08e-8135-448b-8fe8-a603d8f9180c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExchangesInPeriod_539575ca-907d-48f4-a3b4-a86cebe835cf" xlink:href="bakkt-20240930.xsd#bakkt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExchangesInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_adb4d260-1a19-4450-865d-69523b1d8bae" xlink:to="loc_bakkt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExchangesInPeriod_539575ca-907d-48f4-a3b4-a86cebe835cf" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_80d19719-7efc-4b65-aaa3-37acffb38e71" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_124d3349-55a3-4073-a139-6799e9c754ea" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6700c708-31f5-4a85-9201-456f949a379d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_124d3349-55a3-4073-a139-6799e9c754ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_5101ebc0-eae4-469f-b07a-c9d389f43735" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6700c708-31f5-4a85-9201-456f949a379d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_5101ebc0-eae4-469f-b07a-c9d389f43735" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_903f9354-0170-4e51-a10d-b107c89f0d21" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_5101ebc0-eae4-469f-b07a-c9d389f43735" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_903f9354-0170-4e51-a10d-b107c89f0d21" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_d8a3acdc-fb51-4f38-b78e-113288113e59" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract_921ac202-f6f8-4af2-ad6f-af0007a1f191" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6700c708-31f5-4a85-9201-456f949a379d" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract_921ac202-f6f8-4af2-ad6f-af0007a1f191" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding_532d5278-c9e7-4982-926a-900dff6b412b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract_921ac202-f6f8-4af2-ad6f-af0007a1f191" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding_532d5278-c9e7-4982-926a-900dff6b412b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/NetLosspershareAntidilutiveSharesExcludedFromComputationDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#NetLosspershareAntidilutiveSharesExcludedFromComputationDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/NetLosspershareAntidilutiveSharesExcludedFromComputationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_b8754f1c-4f3a-452a-bbe6-df9d9399c18e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_7604cf3a-9742-45d6-a1fe-0f9eff1c93e2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_b8754f1c-4f3a-452a-bbe6-df9d9399c18e" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_7604cf3a-9742-45d6-a1fe-0f9eff1c93e2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_91d47961-6a81-403f-bf54-3fc4dc9664e8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_7604cf3a-9742-45d6-a1fe-0f9eff1c93e2" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_91d47961-6a81-403f-bf54-3fc4dc9664e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_91d47961-6a81-403f-bf54-3fc4dc9664e8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_91d47961-6a81-403f-bf54-3fc4dc9664e8" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_91d47961-6a81-403f-bf54-3fc4dc9664e8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_ec068dc9-af91-420f-912b-587193343a3b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_91d47961-6a81-403f-bf54-3fc4dc9664e8" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_ec068dc9-af91-420f-912b-587193343a3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember_8b000120-2f0a-4e07-bb09-c7f6b9406433" xlink:href="bakkt-20240930.xsd#bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_ec068dc9-af91-420f-912b-587193343a3b" xlink:to="loc_bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember_8b000120-2f0a-4e07-bb09-c7f6b9406433" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_5bcc06e7-1d9b-4b13-8c2a-aa074c73a4bf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WarrantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_ec068dc9-af91-420f-912b-587193343a3b" xlink:to="loc_us-gaap_WarrantMember_5bcc06e7-1d9b-4b13-8c2a-aa074c73a4bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_IncentiveUnitsOpcoMember_f84785ce-5d39-48c5-b17f-50b2a91ac3ea" xlink:href="bakkt-20240930.xsd#bakkt_IncentiveUnitsOpcoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_ec068dc9-af91-420f-912b-587193343a3b" xlink:to="loc_bakkt_IncentiveUnitsOpcoMember_f84785ce-5d39-48c5-b17f-50b2a91ac3ea" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonUnitsOpcoMember_c5bf968a-8da1-48b7-aa3d-931995b7caaf" xlink:href="bakkt-20240930.xsd#bakkt_CommonUnitsOpcoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_ec068dc9-af91-420f-912b-587193343a3b" xlink:to="loc_bakkt_CommonUnitsOpcoMember_c5bf968a-8da1-48b7-aa3d-931995b7caaf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightAxis_80f7944f-b1ad-4539-a2be-562f68b96dfa" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_7604cf3a-9742-45d6-a1fe-0f9eff1c93e2" xlink:to="loc_us-gaap_ClassOfWarrantOrRightAxis_80f7944f-b1ad-4539-a2be-562f68b96dfa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_80f7944f-b1ad-4539-a2be-562f68b96dfa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_80f7944f-b1ad-4539-a2be-562f68b96dfa" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_80f7944f-b1ad-4539-a2be-562f68b96dfa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_ca4a2ab7-7f94-448a-9084-0dd2d0c8e780" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_80f7944f-b1ad-4539-a2be-562f68b96dfa" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_ca4a2ab7-7f94-448a-9084-0dd2d0c8e780" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PublicWarrantsMember_8c776d2e-ae05-4403-b8d0-a042dc3297ae" xlink:href="bakkt-20240930.xsd#bakkt_PublicWarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_ca4a2ab7-7f94-448a-9084-0dd2d0c8e780" xlink:to="loc_bakkt_PublicWarrantsMember_8c776d2e-ae05-4403-b8d0-a042dc3297ae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_OpcoWarrantsMember_fc80918c-653a-45c6-b8be-bac5af14da53" xlink:href="bakkt-20240930.xsd#bakkt_OpcoWarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_ca4a2ab7-7f94-448a-9084-0dd2d0c8e780" xlink:to="loc_bakkt_OpcoWarrantsMember_fc80918c-653a-45c6-b8be-bac5af14da53" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_0a0d8d69-e727-4c70-978b-b928b00f9d80" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_b8754f1c-4f3a-452a-bbe6-df9d9399c18e" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_0a0d8d69-e727-4c70-978b-b928b00f9d80" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/CommitmentandContingenciesNarrativeDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#CommitmentandContingenciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/CommitmentandContingenciesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_f5eafeb3-d07e-4dc8-a3dd-0c0cb9063ce6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCommitmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsTable_d702760d-7816-4c1c-9d49-270f87a91731" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCommitmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_f5eafeb3-d07e-4dc8-a3dd-0c0cb9063ce6" xlink:to="loc_us-gaap_OtherCommitmentsTable_d702760d-7816-4c1c-9d49-270f87a91731" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsAxis_2d04ca53-0935-43d0-8771-d6490ad43d60" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCommitmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_d702760d-7816-4c1c-9d49-270f87a91731" xlink:to="loc_us-gaap_OtherCommitmentsAxis_2d04ca53-0935-43d0-8771-d6490ad43d60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_2d04ca53-0935-43d0-8771-d6490ad43d60_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OtherCommitmentsAxis_2d04ca53-0935-43d0-8771-d6490ad43d60" xlink:to="loc_us-gaap_OtherCommitmentsDomain_2d04ca53-0935-43d0-8771-d6490ad43d60_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsDomain_7cb3f5b6-bba9-4846-8217-eade3705b92b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCommitmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OtherCommitmentsAxis_2d04ca53-0935-43d0-8771-d6490ad43d60" xlink:to="loc_us-gaap_OtherCommitmentsDomain_7cb3f5b6-bba9-4846-8217-eade3705b92b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CloudComputingArrangementMember_edfdd2dd-de93-4b76-a072-d21b32a24925" xlink:href="bakkt-20240930.xsd#bakkt_CloudComputingArrangementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsDomain_7cb3f5b6-bba9-4846-8217-eade3705b92b" xlink:to="loc_bakkt_CloudComputingArrangementMember_edfdd2dd-de93-4b76-a072-d21b32a24925" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_1710fe2f-7672-4aba-8e87-504051aaa2d8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_d702760d-7816-4c1c-9d49-270f87a91731" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_1710fe2f-7672-4aba-8e87-504051aaa2d8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_1710fe2f-7672-4aba-8e87-504051aaa2d8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_1710fe2f-7672-4aba-8e87-504051aaa2d8" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_1710fe2f-7672-4aba-8e87-504051aaa2d8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_f70b66d1-9a27-4280-b62e-fe5736b2e8fa" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_1710fe2f-7672-4aba-8e87-504051aaa2d8" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_f70b66d1-9a27-4280-b62e-fe5736b2e8fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_f33023a7-c1fe-4885-85bb-394ce65059ab" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_f70b66d1-9a27-4280-b62e-fe5736b2e8fa" xlink:to="loc_us-gaap_SubsequentEventMember_f33023a7-c1fe-4885-85bb-394ce65059ab" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanCostRecognized_72b597ff-f50a-48f0-9ffe-323e875ca009" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DefinedContributionPlanCostRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_f5eafeb3-d07e-4dc8-a3dd-0c0cb9063ce6" xlink:to="loc_us-gaap_DefinedContributionPlanCostRecognized_72b597ff-f50a-48f0-9ffe-323e875ca009" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_b958e369-bb95-4805-9968-07d87a250172" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LitigationSettlementAmountAwardedToOtherParty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_f5eafeb3-d07e-4dc8-a3dd-0c0cb9063ce6" xlink:to="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_b958e369-bb95-4805-9968-07d87a250172" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PurchasingCardFacilityMaximumBorrowingCapacity_495d04c8-2fc6-4db9-a597-af146152e1a2" xlink:href="bakkt-20240930.xsd#bakkt_PurchasingCardFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_f5eafeb3-d07e-4dc8-a3dd-0c0cb9063ce6" xlink:to="loc_bakkt_PurchasingCardFacilityMaximumBorrowingCapacity_495d04c8-2fc6-4db9-a597-af146152e1a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PurchasingCardFacilityLiquidityMaintenanceRequirementMinimum_f1ff91ff-5875-4322-aae7-117212ed582b" xlink:href="bakkt-20240930.xsd#bakkt_PurchasingCardFacilityLiquidityMaintenanceRequirementMinimum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_f5eafeb3-d07e-4dc8-a3dd-0c0cb9063ce6" xlink:to="loc_bakkt_PurchasingCardFacilityLiquidityMaintenanceRequirementMinimum_f1ff91ff-5875-4322-aae7-117212ed582b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermPurchaseCommitmentPeriod_bd698794-b18f-4fd7-a051-d95414f1cb6c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermPurchaseCommitmentPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_f5eafeb3-d07e-4dc8-a3dd-0c0cb9063ce6" xlink:to="loc_us-gaap_LongtermPurchaseCommitmentPeriod_bd698794-b18f-4fd7-a051-d95414f1cb6c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LegalFees_e9813b61-5737-4832-ab38-9941de30bb11" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LegalFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_f5eafeb3-d07e-4dc8-a3dd-0c0cb9063ce6" xlink:to="loc_us-gaap_LegalFees_e9813b61-5737-4832-ab38-9941de30bb11" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossOnContractTermination_6566a5bd-79f6-405c-884a-09837c169a35" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossOnContractTermination"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_f5eafeb3-d07e-4dc8-a3dd-0c0cb9063ce6" xlink:to="loc_us-gaap_LossOnContractTermination_6566a5bd-79f6-405c-884a-09837c169a35" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNumberOfDefendants_c61ae8de-bb70-40d6-a313-5dbf1ab1b2ef" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LossContingencyNumberOfDefendants"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_f5eafeb3-d07e-4dc8-a3dd-0c0cb9063ce6" xlink:to="loc_us-gaap_LossContingencyNumberOfDefendants_c61ae8de-bb70-40d6-a313-5dbf1ab1b2ef" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForLegalSettlements_d384f62e-2897-436a-bf8e-89f4709cce3c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForLegalSettlements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_f5eafeb3-d07e-4dc8-a3dd-0c0cb9063ce6" xlink:to="loc_us-gaap_PaymentsForLegalSettlements_d384f62e-2897-436a-bf8e-89f4709cce3c" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/FairValueMeasurementsScheduleofFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#FairValueMeasurementsScheduleofFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/FairValueMeasurementsScheduleofFairValueAssetsandLiabilitiesMeasuredonRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a352115e-41d0-4728-b337-8ce575ed8b5e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_87afb9d8-7b8c-4b48-b869-afa226b431fc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a352115e-41d0-4728-b337-8ce575ed8b5e" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_87afb9d8-7b8c-4b48-b869-afa226b431fc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightAxis_07b7d375-8960-4db5-a47c-15429aaecb10" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_87afb9d8-7b8c-4b48-b869-afa226b431fc" xlink:to="loc_us-gaap_ClassOfWarrantOrRightAxis_07b7d375-8960-4db5-a47c-15429aaecb10" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_07b7d375-8960-4db5-a47c-15429aaecb10_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_07b7d375-8960-4db5-a47c-15429aaecb10" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_07b7d375-8960-4db5-a47c-15429aaecb10_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_f3f71f1b-4aeb-4a38-9b41-0876832d811d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_07b7d375-8960-4db5-a47c-15429aaecb10" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_f3f71f1b-4aeb-4a38-9b41-0876832d811d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PublicWarrantsMember_a7274211-b658-4486-9565-88f0c93833fb" xlink:href="bakkt-20240930.xsd#bakkt_PublicWarrantsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_f3f71f1b-4aeb-4a38-9b41-0876832d811d" xlink:to="loc_bakkt_PublicWarrantsMember_a7274211-b658-4486-9565-88f0c93833fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_53fee211-b729-47fc-84e6-78dcda27339b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_87afb9d8-7b8c-4b48-b869-afa226b431fc" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_53fee211-b729-47fc-84e6-78dcda27339b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_53fee211-b729-47fc-84e6-78dcda27339b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_53fee211-b729-47fc-84e6-78dcda27339b" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_53fee211-b729-47fc-84e6-78dcda27339b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_d22c549c-e8d2-49d4-8ea4-98dc58c65127" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_53fee211-b729-47fc-84e6-78dcda27339b" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_d22c549c-e8d2-49d4-8ea4-98dc58c65127" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_395d1d52-c9a0-4390-aeb5-37138612cb77" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_d22c549c-e8d2-49d4-8ea4-98dc58c65127" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_395d1d52-c9a0-4390-aeb5-37138612cb77" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a91b52a3-256f-46ea-a4f3-8035685b0e02" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_87afb9d8-7b8c-4b48-b869-afa226b431fc" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a91b52a3-256f-46ea-a4f3-8035685b0e02" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a91b52a3-256f-46ea-a4f3-8035685b0e02_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a91b52a3-256f-46ea-a4f3-8035685b0e02" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a91b52a3-256f-46ea-a4f3-8035685b0e02_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_eae4a726-0439-4295-ac56-1b6ca0fd4e3d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a91b52a3-256f-46ea-a4f3-8035685b0e02" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_eae4a726-0439-4295-ac56-1b6ca0fd4e3d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_8a976ed5-1ff4-424b-b24c-31381141baf2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_eae4a726-0439-4295-ac56-1b6ca0fd4e3d" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_8a976ed5-1ff4-424b-b24c-31381141baf2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_c16f4988-4e1c-479c-b066-48cfd1199098" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_eae4a726-0439-4295-ac56-1b6ca0fd4e3d" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_c16f4988-4e1c-479c-b066-48cfd1199098" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_4871ecfe-5b06-43e5-a4e9-b897fe817e80" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_eae4a726-0439-4295-ac56-1b6ca0fd4e3d" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_4871ecfe-5b06-43e5-a4e9-b897fe817e80" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_6106254e-bb9e-41fc-bb4c-e0080d9bfe4a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_87afb9d8-7b8c-4b48-b869-afa226b431fc" xlink:to="loc_us-gaap_FinancialInstrumentAxis_6106254e-bb9e-41fc-bb4c-e0080d9bfe4a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6106254e-bb9e-41fc-bb4c-e0080d9bfe4a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_6106254e-bb9e-41fc-bb4c-e0080d9bfe4a" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6106254e-bb9e-41fc-bb4c-e0080d9bfe4a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_87d6340c-2a8b-4a90-a3e5-6861c6e1a95d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_6106254e-bb9e-41fc-bb4c-e0080d9bfe4a" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_87d6340c-2a8b-4a90-a3e5-6861c6e1a95d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryBondSecuritiesMember_eb28b410-b9e2-48ad-bc38-b2931df30ade" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_USTreasuryBondSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_87d6340c-2a8b-4a90-a3e5-6861c6e1a95d" xlink:to="loc_us-gaap_USTreasuryBondSecuritiesMember_eb28b410-b9e2-48ad-bc38-b2931df30ade" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_84aa3d82-fdf6-4408-be02-20092bc50ac1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a352115e-41d0-4728-b337-8ce575ed8b5e" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_84aa3d82-fdf6-4408-be02-20092bc50ac1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_69903a0e-fc85-4d26-9b7a-b0a8913f8b33" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_84aa3d82-fdf6-4408-be02-20092bc50ac1" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_69903a0e-fc85-4d26-9b7a-b0a8913f8b33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SafeguardingAssetPlatformOperatorCryptoAsset_6a7c2574-bb86-46e7-a0da-45a7d5fbece8" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SafeguardingAssetPlatformOperatorCryptoAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_84aa3d82-fdf6-4408-be02-20092bc50ac1" xlink:to="loc_srt_SafeguardingAssetPlatformOperatorCryptoAsset_6a7c2574-bb86-46e7-a0da-45a7d5fbece8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_65fb49e7-8abe-4616-88cf-59caedd885f4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_84aa3d82-fdf6-4408-be02-20092bc50ac1" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_65fb49e7-8abe-4616-88cf-59caedd885f4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_102a990f-8523-4433-a696-3a3b17b37083" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a352115e-41d0-4728-b337-8ce575ed8b5e" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_102a990f-8523-4433-a696-3a3b17b37083" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SafeguardingLiabilityPlatformOperatorCryptoAsset_8318479c-3d33-4c1d-835f-163ff4617736" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SafeguardingLiabilityPlatformOperatorCryptoAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_102a990f-8523-4433-a696-3a3b17b37083" xlink:to="loc_srt_SafeguardingLiabilityPlatformOperatorCryptoAsset_8318479c-3d33-4c1d-835f-163ff4617736" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContingentConsiderationClassifiedAsEquityFairValueDisclosure_79bd6532-9f88-4285-a478-ae3db2d9b4ac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContingentConsiderationClassifiedAsEquityFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_102a990f-8523-4433-a696-3a3b17b37083" xlink:to="loc_us-gaap_ContingentConsiderationClassifiedAsEquityFairValueDisclosure_79bd6532-9f88-4285-a478-ae3db2d9b4ac" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_WarrantLiability_8e4365d7-a4c1-4065-8413-26781505e6e0" xlink:href="bakkt-20240930.xsd#bakkt_WarrantLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_102a990f-8523-4433-a696-3a3b17b37083" xlink:to="loc_bakkt_WarrantLiability_8e4365d7-a4c1-4065-8413-26781505e6e0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_2b564eaa-9577-4c00-b62b-d0d8ef6d5b64" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_102a990f-8523-4433-a696-3a3b17b37083" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_2b564eaa-9577-4c00-b62b-d0d8ef6d5b64" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#FairValueMeasurementsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_8c61e6a3-f74c-417d-9313-b2a477beb793" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_d5a71a49-7aa4-4e0a-a640-8df27b5657e2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8c61e6a3-f74c-417d-9313-b2a477beb793" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_d5a71a49-7aa4-4e0a-a640-8df27b5657e2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_9ab78b1f-3468-436c-9759-32baa0a3d074" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_d5a71a49-7aa4-4e0a-a640-8df27b5657e2" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_9ab78b1f-3468-436c-9759-32baa0a3d074" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_9ab78b1f-3468-436c-9759-32baa0a3d074_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_9ab78b1f-3468-436c-9759-32baa0a3d074" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_9ab78b1f-3468-436c-9759-32baa0a3d074_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8d82069a-2338-4d2c-911d-ebcd5b24fe0c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_9ab78b1f-3468-436c-9759-32baa0a3d074" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8d82069a-2338-4d2c-911d-ebcd5b24fe0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ApexCryptoLLCMember_0074faf8-3cc5-44b3-bc7f-3ca781ad7a67" xlink:href="bakkt-20240930.xsd#bakkt_ApexCryptoLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8d82069a-2338-4d2c-911d-ebcd5b24fe0c" xlink:to="loc_bakkt_ApexCryptoLLCMember_0074faf8-3cc5-44b3-bc7f-3ca781ad7a67" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_4adff262-d15c-449e-87d1-8b408e6e2203" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8c61e6a3-f74c-417d-9313-b2a477beb793" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_4adff262-d15c-449e-87d1-8b408e6e2203" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_GrossProfitVolatility_923cfbc9-b8c0-4f31-8739-f9e4277179ed" xlink:href="bakkt-20240930.xsd#bakkt_GrossProfitVolatility"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8c61e6a3-f74c-417d-9313-b2a477beb793" xlink:to="loc_bakkt_GrossProfitVolatility_923cfbc9-b8c0-4f31-8739-f9e4277179ed" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/FairValueMeasurementsFairValueAssumptionsDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#FairValueMeasurementsFairValueAssumptionsDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/FairValueMeasurementsFairValueAssumptionsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_ee1d0667-991f-49df-80c1-fef8dd73bc33" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_04e6fbb5-48ed-48bf-a364-5527203fa01f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_ee1d0667-991f-49df-80c1-fef8dd73bc33" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_04e6fbb5-48ed-48bf-a364-5527203fa01f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis_47b13e14-1b7e-4ba6-9b8b-edfeaa5603e4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MeasurementInputTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_04e6fbb5-48ed-48bf-a364-5527203fa01f" xlink:to="loc_us-gaap_MeasurementInputTypeAxis_47b13e14-1b7e-4ba6-9b8b-edfeaa5603e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_47b13e14-1b7e-4ba6-9b8b-edfeaa5603e4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_47b13e14-1b7e-4ba6-9b8b-edfeaa5603e4" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_47b13e14-1b7e-4ba6-9b8b-edfeaa5603e4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_3e6fff2b-e081-4b09-93fd-ac83e2d31c8f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_47b13e14-1b7e-4ba6-9b8b-edfeaa5603e4" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_3e6fff2b-e081-4b09-93fd-ac83e2d31c8f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputExpectedTermMember_ca25a5df-e321-4369-a7ea-c0adc9e2926c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MeasurementInputExpectedTermMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_3e6fff2b-e081-4b09-93fd-ac83e2d31c8f" xlink:to="loc_us-gaap_MeasurementInputExpectedTermMember_ca25a5df-e321-4369-a7ea-c0adc9e2926c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputRiskFreeInterestRateMember_3f110bb6-e26b-485b-9ff5-38766071ffbb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MeasurementInputRiskFreeInterestRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_3e6fff2b-e081-4b09-93fd-ac83e2d31c8f" xlink:to="loc_us-gaap_MeasurementInputRiskFreeInterestRateMember_3f110bb6-e26b-485b-9ff5-38766071ffbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputPriceVolatilityMember_ba867665-fc48-4a70-9b9b-0a9cf6accb64" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MeasurementInputPriceVolatilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_3e6fff2b-e081-4b09-93fd-ac83e2d31c8f" xlink:to="loc_us-gaap_MeasurementInputPriceVolatilityMember_ba867665-fc48-4a70-9b9b-0a9cf6accb64" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_d4d5ee98-6139-4667-a58a-15880be8b916" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_04e6fbb5-48ed-48bf-a364-5527203fa01f" xlink:to="loc_srt_RangeAxis_d4d5ee98-6139-4667-a58a-15880be8b916" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_d4d5ee98-6139-4667-a58a-15880be8b916_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_d4d5ee98-6139-4667-a58a-15880be8b916" xlink:to="loc_srt_RangeMember_d4d5ee98-6139-4667-a58a-15880be8b916_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_7e09429e-e01a-4b8d-8c6d-96351ed278e5" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_d4d5ee98-6139-4667-a58a-15880be8b916" xlink:to="loc_srt_RangeMember_7e09429e-e01a-4b8d-8c6d-96351ed278e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_83189b94-5f11-4460-a345-b0eeaddcc48c" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_7e09429e-e01a-4b8d-8c6d-96351ed278e5" xlink:to="loc_srt_MinimumMember_83189b94-5f11-4460-a345-b0eeaddcc48c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_8dc7f916-6f39-4071-a856-3f752c4fdd48" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_7e09429e-e01a-4b8d-8c6d-96351ed278e5" xlink:to="loc_srt_MaximumMember_8dc7f916-6f39-4071-a856-3f752c4fdd48" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantsAndRightsOutstandingMeasurementInput_6c83d5f2-99ca-45b4-9108-3aeafa4243e2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WarrantsAndRightsOutstandingMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_ee1d0667-991f-49df-80c1-fef8dd73bc33" xlink:to="loc_us-gaap_WarrantsAndRightsOutstandingMeasurementInput_6c83d5f2-99ca-45b4-9108-3aeafa4243e2" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/LeasesDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#LeasesDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/LeasesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_6f84265d-fbf5-47f2-9fd7-9f2f19f13f15" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_5fe48098-cc99-4f89-9a6a-2f21e7b6d886" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_6f84265d-fbf5-47f2-9fd7-9f2f19f13f15" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_5fe48098-cc99-4f89-9a6a-2f21e7b6d886" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_c9608c00-03bb-4e4a-b5f0-9c3a152a49ea" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_5fe48098-cc99-4f89-9a6a-2f21e7b6d886" xlink:to="loc_srt_RangeAxis_c9608c00-03bb-4e4a-b5f0-9c3a152a49ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c9608c00-03bb-4e4a-b5f0-9c3a152a49ea_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_c9608c00-03bb-4e4a-b5f0-9c3a152a49ea" xlink:to="loc_srt_RangeMember_c9608c00-03bb-4e4a-b5f0-9c3a152a49ea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_56e02a2e-550e-4189-ae2c-7ba59322c9b9" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_c9608c00-03bb-4e4a-b5f0-9c3a152a49ea" xlink:to="loc_srt_RangeMember_56e02a2e-550e-4189-ae2c-7ba59322c9b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_f0d76a95-13ae-46f2-beb6-ac0fc1b32124" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_56e02a2e-550e-4189-ae2c-7ba59322c9b9" xlink:to="loc_srt_MinimumMember_f0d76a95-13ae-46f2-beb6-ac0fc1b32124" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_6de27f01-6049-41ba-9c95-9fb53ece80c3" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_56e02a2e-550e-4189-ae2c-7ba59322c9b9" xlink:to="loc_srt_MaximumMember_6de27f01-6049-41ba-9c95-9fb53ece80c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_56bc549d-1d7f-4176-8cd1-5a0cf4e57998" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_5fe48098-cc99-4f89-9a6a-2f21e7b6d886" xlink:to="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_56bc549d-1d7f-4176-8cd1-5a0cf4e57998" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_56bc549d-1d7f-4176-8cd1-5a0cf4e57998_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_56bc549d-1d7f-4176-8cd1-5a0cf4e57998" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_56bc549d-1d7f-4176-8cd1-5a0cf4e57998_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_fb861845-22e5-4ac9-a971-896c1b9897ce" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_56bc549d-1d7f-4176-8cd1-5a0cf4e57998" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_fb861845-22e5-4ac9-a971-896c1b9897ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OfficeBuildingMember_5da87efb-783c-4c41-a4b7-5949cce1db34" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_OfficeBuildingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_fb861845-22e5-4ac9-a971-896c1b9897ce" xlink:to="loc_srt_OfficeBuildingMember_5da87efb-783c-4c41-a4b7-5949cce1db34" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_3be73054-f9b4-40dd-9456-d00c1dadb56e" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_5fe48098-cc99-4f89-9a6a-2f21e7b6d886" xlink:to="loc_srt_StatementGeographicalAxis_3be73054-f9b4-40dd-9456-d00c1dadb56e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_3be73054-f9b4-40dd-9456-d00c1dadb56e_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_3be73054-f9b4-40dd-9456-d00c1dadb56e" xlink:to="loc_srt_SegmentGeographicalDomain_3be73054-f9b4-40dd-9456-d00c1dadb56e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_618dd7ad-8561-420f-8a92-b9a6514769d0" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_3be73054-f9b4-40dd-9456-d00c1dadb56e" xlink:to="loc_srt_SegmentGeographicalDomain_618dd7ad-8561-420f-8a92-b9a6514769d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_AZ_515798dc-5c83-4854-b2d7-731fd6d57e52" xlink:href="https://xbrl.sec.gov/stpr/2024/stpr-2024.xsd#stpr_AZ"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_618dd7ad-8561-420f-8a92-b9a6514769d0" xlink:to="loc_stpr_AZ_515798dc-5c83-4854-b2d7-731fd6d57e52" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_NY_ef6e18ca-3cd5-4c6e-bfd5-5ed15eeb31bd" xlink:href="https://xbrl.sec.gov/stpr/2024/stpr-2024.xsd#stpr_NY"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_618dd7ad-8561-420f-8a92-b9a6514769d0" xlink:to="loc_stpr_NY_ef6e18ca-3cd5-4c6e-bfd5-5ed15eeb31bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_GA_c31f4e90-770d-406a-83d7-be42db871be8" xlink:href="https://xbrl.sec.gov/stpr/2024/stpr-2024.xsd#stpr_GA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_618dd7ad-8561-420f-8a92-b9a6514769d0" xlink:to="loc_stpr_GA_c31f4e90-770d-406a-83d7-be42db871be8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_6c3d6fa9-8691-478e-953e-2a185b35978b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_6f84265d-fbf5-47f2-9fd7-9f2f19f13f15" xlink:to="loc_us-gaap_LesseeOperatingLeaseTermOfContract_6c3d6fa9-8691-478e-953e-2a185b35978b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_e8b2ac31-14c1-40fe-9314-506ef219e5b0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_6f84265d-fbf5-47f2-9fd7-9f2f19f13f15" xlink:to="loc_us-gaap_OperatingLeaseLiability_e8b2ac31-14c1-40fe-9314-506ef219e5b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseRemainingLeaseTerm_dc7feddb-1ca6-4d55-a79e-1f447718b14d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseRemainingLeaseTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_6f84265d-fbf5-47f2-9fd7-9f2f19f13f15" xlink:to="loc_us-gaap_LesseeOperatingLeaseRemainingLeaseTerm_dc7feddb-1ca6-4d55-a79e-1f447718b14d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_58636a28-7468-4ca9-9f4a-3a72b5d49309" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseRenewalTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_6f84265d-fbf5-47f2-9fd7-9f2f19f13f15" xlink:to="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_58636a28-7468-4ca9-9f4a-3a72b5d49309" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_d645b40c-9638-46c2-8336-4940b0e4f8a7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_6f84265d-fbf5-47f2-9fd7-9f2f19f13f15" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_d645b40c-9638-46c2-8336-4940b0e4f8a7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_2bcdd213-b4ef-4680-bb36-f05edd228d5b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_6f84265d-fbf5-47f2-9fd7-9f2f19f13f15" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_2bcdd213-b4ef-4680-bb36-f05edd228d5b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseExpense_f1946b5b-51e4-4222-bac3-675201cdecf7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_6f84265d-fbf5-47f2-9fd7-9f2f19f13f15" xlink:to="loc_us-gaap_OperatingLeaseExpense_f1946b5b-51e4-4222-bac3-675201cdecf7" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/SafeguardingObligationForCryptoDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#SafeguardingObligationForCryptoDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/SafeguardingObligationForCryptoDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_srt_PlatformOperatorCryptoAssetLineItems_fb4edabd-2b0e-44df-801c-b14f73e36039" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_PlatformOperatorCryptoAssetLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_PlatformOperatorCryptoAssetTable_612efb5c-ebc5-4109-b30b-776ebe2cda4a" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_PlatformOperatorCryptoAssetTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_PlatformOperatorCryptoAssetLineItems_fb4edabd-2b0e-44df-801c-b14f73e36039" xlink:to="loc_srt_PlatformOperatorCryptoAssetTable_612efb5c-ebc5-4109-b30b-776ebe2cda4a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CryptoAssetAxis_374e9af4-e74e-4ebc-b908-550312b6862a" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_CryptoAssetAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_PlatformOperatorCryptoAssetTable_612efb5c-ebc5-4109-b30b-776ebe2cda4a" xlink:to="loc_srt_CryptoAssetAxis_374e9af4-e74e-4ebc-b908-550312b6862a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CryptoAssetDomain_374e9af4-e74e-4ebc-b908-550312b6862a_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_CryptoAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CryptoAssetAxis_374e9af4-e74e-4ebc-b908-550312b6862a" xlink:to="loc_srt_CryptoAssetDomain_374e9af4-e74e-4ebc-b908-550312b6862a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CryptoAssetDomain_633d41f2-9c59-4ae4-b4f1-15b9e92f65b0" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_CryptoAssetDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CryptoAssetAxis_374e9af4-e74e-4ebc-b908-550312b6862a" xlink:to="loc_srt_CryptoAssetDomain_633d41f2-9c59-4ae4-b4f1-15b9e92f65b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_BitcoinMember_1e9bafa4-5703-4bac-9ef8-01500860e7c2" xlink:href="bakkt-20240930.xsd#bakkt_BitcoinMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CryptoAssetDomain_633d41f2-9c59-4ae4-b4f1-15b9e92f65b0" xlink:to="loc_bakkt_BitcoinMember_1e9bafa4-5703-4bac-9ef8-01500860e7c2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_EtherMember_2530cf6a-90a7-4320-83c4-7746333062f0" xlink:href="bakkt-20240930.xsd#bakkt_EtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CryptoAssetDomain_633d41f2-9c59-4ae4-b4f1-15b9e92f65b0" xlink:to="loc_bakkt_EtherMember_2530cf6a-90a7-4320-83c4-7746333062f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ShibaInuMember_2e072846-f09d-48f7-a728-714dcf321837" xlink:href="bakkt-20240930.xsd#bakkt_ShibaInuMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CryptoAssetDomain_633d41f2-9c59-4ae4-b4f1-15b9e92f65b0" xlink:to="loc_bakkt_ShibaInuMember_2e072846-f09d-48f7-a728-714dcf321837" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_DogecoinMember_c6419467-6774-482c-b669-5c5e326799f2" xlink:href="bakkt-20240930.xsd#bakkt_DogecoinMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CryptoAssetDomain_633d41f2-9c59-4ae4-b4f1-15b9e92f65b0" xlink:to="loc_bakkt_DogecoinMember_c6419467-6774-482c-b669-5c5e326799f2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_OtherCryptoAssetsMember_3eec2d35-5502-4960-9b01-3a63255df471" xlink:href="bakkt-20240930.xsd#bakkt_OtherCryptoAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CryptoAssetDomain_633d41f2-9c59-4ae4-b4f1-15b9e92f65b0" xlink:to="loc_bakkt_OtherCryptoAssetsMember_3eec2d35-5502-4960-9b01-3a63255df471" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SafeguardingLiabilityPlatformOperatorCryptoAsset_1a6d82fc-6121-48df-8bae-957ad14ea88c" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SafeguardingLiabilityPlatformOperatorCryptoAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_PlatformOperatorCryptoAssetLineItems_fb4edabd-2b0e-44df-801c-b14f73e36039" xlink:to="loc_srt_SafeguardingLiabilityPlatformOperatorCryptoAsset_1a6d82fc-6121-48df-8bae-957ad14ea88c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SafeguardingAssetPlatformOperatorCryptoAsset_8af6d668-df19-4f51-9134-2607d50d07ef" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_SafeguardingAssetPlatformOperatorCryptoAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_PlatformOperatorCryptoAssetLineItems_fb4edabd-2b0e-44df-801c-b14f73e36039" xlink:to="loc_srt_SafeguardingAssetPlatformOperatorCryptoAsset_8af6d668-df19-4f51-9134-2607d50d07ef" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/InvestmentinDebtSecuritiesCostBasisandFairValueofAvailableforSaleDebtSecuritiesDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#InvestmentinDebtSecuritiesCostBasisandFairValueofAvailableforSaleDebtSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/InvestmentinDebtSecuritiesCostBasisandFairValueofAvailableforSaleDebtSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_fa460268-f752-481c-a6f2-031b2670830e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_b0595857-4276-4436-bbfd-5d3c72b29cda" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_fa460268-f752-481c-a6f2-031b2670830e" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_b0595857-4276-4436-bbfd-5d3c72b29cda" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_de4811e8-c85e-4b13-8dbc-5b040e08c109" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_b0595857-4276-4436-bbfd-5d3c72b29cda" xlink:to="loc_us-gaap_FinancialInstrumentAxis_de4811e8-c85e-4b13-8dbc-5b040e08c109" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_de4811e8-c85e-4b13-8dbc-5b040e08c109_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_de4811e8-c85e-4b13-8dbc-5b040e08c109" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_de4811e8-c85e-4b13-8dbc-5b040e08c109_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_94e22f48-1cc4-40ec-821f-acc609579a28" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_de4811e8-c85e-4b13-8dbc-5b040e08c109" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_94e22f48-1cc4-40ec-821f-acc609579a28" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasuryBondSecuritiesMember_fc0277b3-1227-4610-97e9-f59083e94a11" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_USTreasuryBondSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_94e22f48-1cc4-40ec-821f-acc609579a28" xlink:to="loc_us-gaap_USTreasuryBondSecuritiesMember_fc0277b3-1227-4610-97e9-f59083e94a11" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_b54a6650-add7-4890-91a2-4082ca6a5e8a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_fa460268-f752-481c-a6f2-031b2670830e" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_b54a6650-add7-4890-91a2-4082ca6a5e8a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax_abbdf494-1652-4a0e-b860-70b2db0524c7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_fa460268-f752-481c-a6f2-031b2670830e" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax_abbdf494-1652-4a0e-b860-70b2db0524c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_64df73af-1caf-46c2-8f84-ffb63e58678b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_fa460268-f752-481c-a6f2-031b2670830e" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_64df73af-1caf-46c2-8f84-ffb63e58678b" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bakkt.com/role/SubsequentEventsDetails" xlink:type="simple" xlink:href="bakkt-20240930.xsd#SubsequentEventsDetails"/>
  <link:definitionLink xlink:role="http://www.bakkt.com/role/SubsequentEventsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_bae9ce09-cee7-4348-b60c-e86c5baa4ee4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_36f49684-d1d3-46a4-96dd-40114febc90b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_bae9ce09-cee7-4348-b60c-e86c5baa4ee4" xlink:to="loc_us-gaap_SubsequentEventTable_36f49684-d1d3-46a4-96dd-40114febc90b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_2d286aeb-45c8-4cbb-9dbb-405e55ef61b3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_36f49684-d1d3-46a4-96dd-40114febc90b" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_2d286aeb-45c8-4cbb-9dbb-405e55ef61b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_2d286aeb-45c8-4cbb-9dbb-405e55ef61b3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_2d286aeb-45c8-4cbb-9dbb-405e55ef61b3" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_2d286aeb-45c8-4cbb-9dbb-405e55ef61b3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_a9505412-12c2-4b0f-8628-7dfbe92921b2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_2d286aeb-45c8-4cbb-9dbb-405e55ef61b3" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_a9505412-12c2-4b0f-8628-7dfbe92921b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_1caeac7d-cd73-47cf-bf8e-7c6eaef31521" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_a9505412-12c2-4b0f-8628-7dfbe92921b2" xlink:to="loc_us-gaap_SubsequentEventMember_1caeac7d-cd73-47cf-bf8e-7c6eaef31521" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_d149ff89-c34f-4842-9a23-3afc96a2240e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_36f49684-d1d3-46a4-96dd-40114febc90b" xlink:to="loc_us-gaap_DebtInstrumentAxis_d149ff89-c34f-4842-9a23-3afc96a2240e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_d149ff89-c34f-4842-9a23-3afc96a2240e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_d149ff89-c34f-4842-9a23-3afc96a2240e" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_d149ff89-c34f-4842-9a23-3afc96a2240e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_83971102-ef43-45a4-b10f-724e6500a7f6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_d149ff89-c34f-4842-9a23-3afc96a2240e" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_83971102-ef43-45a4-b10f-724e6500a7f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_ICECreditFacilityMember_a539bfad-2923-4b6b-a33a-832dca475313" xlink:href="bakkt-20240930.xsd#bakkt_ICECreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_83971102-ef43-45a4-b10f-724e6500a7f6" xlink:to="loc_bakkt_ICECreditFacilityMember_a539bfad-2923-4b6b-a33a-832dca475313" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_21083c5c-133e-4545-86d9-b66e64406536" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_36f49684-d1d3-46a4-96dd-40114febc90b" xlink:to="loc_us-gaap_CreditFacilityAxis_21083c5c-133e-4545-86d9-b66e64406536" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_21083c5c-133e-4545-86d9-b66e64406536_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_21083c5c-133e-4545-86d9-b66e64406536" xlink:to="loc_us-gaap_CreditFacilityDomain_21083c5c-133e-4545-86d9-b66e64406536_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_0bf63c0f-5a86-4b2d-8910-8b6781e9616b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_21083c5c-133e-4545-86d9-b66e64406536" xlink:to="loc_us-gaap_CreditFacilityDomain_0bf63c0f-5a86-4b2d-8910-8b6781e9616b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_60ad05b5-2737-4cac-aaf4-84da7b85096d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_0bf63c0f-5a86-4b2d-8910-8b6781e9616b" xlink:to="loc_us-gaap_LineOfCreditMember_60ad05b5-2737-4cac-aaf4-84da7b85096d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_4dca3d20-27fd-4fec-8c91-0dc5eb6c5997" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_36f49684-d1d3-46a4-96dd-40114febc90b" xlink:to="loc_us-gaap_VariableRateAxis_4dca3d20-27fd-4fec-8c91-0dc5eb6c5997" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_4dca3d20-27fd-4fec-8c91-0dc5eb6c5997_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_4dca3d20-27fd-4fec-8c91-0dc5eb6c5997" xlink:to="loc_us-gaap_VariableRateDomain_4dca3d20-27fd-4fec-8c91-0dc5eb6c5997_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_80d5c0d7-583b-42f9-b107-785139b96f0e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_4dca3d20-27fd-4fec-8c91-0dc5eb6c5997" xlink:to="loc_us-gaap_VariableRateDomain_80d5c0d7-583b-42f9-b107-785139b96f0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_5a56a33f-96b8-4af2-8495-cee1c941d2c1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SecuredOvernightFinancingRateSofrMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_80d5c0d7-583b-42f9-b107-785139b96f0e" xlink:to="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_5a56a33f-96b8-4af2-8495-cee1c941d2c1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrimeRateMember_ac3aa9ac-f7c2-40f4-883b-16a79e8df9e1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PrimeRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_80d5c0d7-583b-42f9-b107-785139b96f0e" xlink:to="loc_us-gaap_PrimeRateMember_ac3aa9ac-f7c2-40f4-883b-16a79e8df9e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_098e2010-d152-4bc7-8c13-27590ff5f621" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_bae9ce09-cee7-4348-b60c-e86c5baa4ee4" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_098e2010-d152-4bc7-8c13-27590ff5f621" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_e35d7c6a-334d-4d76-8f3b-096f5b28793c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_bae9ce09-cee7-4348-b60c-e86c5baa4ee4" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_e35d7c6a-334d-4d76-8f3b-096f5b28793c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_DebtInstrumentAnnualIncreaseInInterestWhenInterestIsElectedToBePaidInKind_5f9649dc-89d2-42f8-a967-79e6201c817e" xlink:href="bakkt-20240930.xsd#bakkt_DebtInstrumentAnnualIncreaseInInterestWhenInterestIsElectedToBePaidInKind"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_bae9ce09-cee7-4348-b60c-e86c5baa4ee4" xlink:to="loc_bakkt_DebtInstrumentAnnualIncreaseInInterestWhenInterestIsElectedToBePaidInKind_5f9649dc-89d2-42f8-a967-79e6201c817e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_DebtInstrumentInterestRateInEventOfDefault_b8e48bd5-9dc9-4476-89c8-0d377647cdfd" xlink:href="bakkt-20240930.xsd#bakkt_DebtInstrumentInterestRateInEventOfDefault"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_bae9ce09-cee7-4348-b60c-e86c5baa4ee4" xlink:to="loc_bakkt_DebtInstrumentInterestRateInEventOfDefault_b8e48bd5-9dc9-4476-89c8-0d377647cdfd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_00a2ed81-3f60-482f-a6c9-b564403eb2e9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_bae9ce09-cee7-4348-b60c-e86c5baa4ee4" xlink:to="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_00a2ed81-3f60-482f-a6c9-b564403eb2e9" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/AwardTypeOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#AwardTypeOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/ecd/AwardTypeOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PerformanceStockUnitsPSUsMember_24d736ed-719b-4b6b-a552-994119a812ce" xlink:href="bakkt-20240930.xsd#bakkt_PerformanceStockUnitsPSUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_bakkt_PerformanceStockUnitsPSUsMember_24d736ed-719b-4b6b-a552-994119a812ce" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember_4a853868-88e0-4a5d-959c-c7e972310912" xlink:href="bakkt-20240930.xsd#bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_bakkt_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember_4a853868-88e0-4a5d-959c-c7e972310912" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_PreferredIncentiveUnitsMember_8695bbc5-9291-4e08-85d9-a987f68e4eff" xlink:href="bakkt-20240930.xsd#bakkt_PreferredIncentiveUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_bakkt_PreferredIncentiveUnitsMember_8695bbc5-9291-4e08-85d9-a987f68e4eff" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_bakkt_CommonIncentiveUnitsMember_cd034ea3-9e4e-47aa-a43f-c9db132445f2" xlink:href="bakkt-20240930.xsd#bakkt_CommonIncentiveUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_bakkt_CommonIncentiveUnitsMember_cd034ea3-9e4e-47aa-a43f-c9db132445f2" xlink:type="arc" order="7"/>
  </link:definitionLink>
</link:linkbase>
