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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019fb3f7-c505-7a7e-ade2-4b270eb03096,g:b4e83ac5-0391-425a-a6db-de3d5640d3d2-->
<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.chime.com/role/Cover" xlink:type="simple" xlink:href="chym-20260731.xsd#Cover"/>
  <link:definitionLink xlink:role="http://www.chime.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_019fb3f7-c505-734d-b070-cb293ad2fff6" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_DocumentInformationTable_019fb3f7-c505-734d-b070-cb293ad2fff6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityListingsExchangeAxis_019fb3f7-c505-7976-998e-fff3f918c1cd" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityListingsExchangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_019fb3f7-c505-734d-b070-cb293ad2fff6" xlink:to="loc_dei_EntityListingsExchangeAxis_019fb3f7-c505-7976-998e-fff3f918c1cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_ExchangeDomain_019fb3f7-c505-7976-998e-fff3f918c1cd_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_ExchangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_EntityListingsExchangeAxis_019fb3f7-c505-7976-998e-fff3f918c1cd" xlink:to="loc_dei_ExchangeDomain_019fb3f7-c505-7976-998e-fff3f918c1cd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_ExchangeDomain_019fb3f7-c505-7552-86d5-b3e06f5b8993" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_ExchangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_EntityListingsExchangeAxis_019fb3f7-c505-7976-998e-fff3f918c1cd" xlink:to="loc_dei_ExchangeDomain_019fb3f7-c505-7552-86d5-b3e06f5b8993" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_exch_XNAS_019fb3f7-c505-74eb-941c-8593f009cfda" xlink:href="https://xbrl.sec.gov/exch/2026/exch-2026.xsd#exch_XNAS"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_ExchangeDomain_019fb3f7-c505-7552-86d5-b3e06f5b8993" xlink:to="loc_exch_XNAS_019fb3f7-c505-74eb-941c-8593f009cfda" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019fb3f7-c505-7fec-8fe9-2eb8076621cb" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_DocumentType_019fb3f7-c505-7fec-8fe9-2eb8076621cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019fb3f7-c505-7ef8-bfff-f5daede0b202" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_DocumentPeriodEndDate_019fb3f7-c505-7ef8-bfff-f5daede0b202" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019fb3f7-c505-7c58-b5f9-0f68313b3708" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_EntityRegistrantName_019fb3f7-c505-7c58-b5f9-0f68313b3708" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019fb3f7-c505-7b43-86d5-d36247daad21" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019fb3f7-c505-7b43-86d5-d36247daad21" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019fb3f7-c505-7f1a-995c-81768f497140" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_EntityFileNumber_019fb3f7-c505-7f1a-995c-81768f497140" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019fb3f7-c505-7f9f-aa16-545f71aab004" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_EntityTaxIdentificationNumber_019fb3f7-c505-7f9f-aa16-545f71aab004" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019fb3f7-c505-7060-99fc-b56982c75a54" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_EntityAddressAddressLine1_019fb3f7-c505-7060-99fc-b56982c75a54" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019fb3f7-c505-7341-b8ca-1285637436c0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_EntityAddressCityOrTown_019fb3f7-c505-7341-b8ca-1285637436c0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019fb3f7-c505-7f9f-ba8e-ce71c8091404" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_EntityAddressStateOrProvince_019fb3f7-c505-7f9f-ba8e-ce71c8091404" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019fb3f7-c505-7da8-88f8-d28805963988" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_EntityAddressPostalZipCode_019fb3f7-c505-7da8-88f8-d28805963988" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019fb3f7-c505-7516-bbd6-e56cadc49ca7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_CityAreaCode_019fb3f7-c505-7516-bbd6-e56cadc49ca7" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019fb3f7-c505-7ead-ba71-9292336da3b4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_LocalPhoneNumber_019fb3f7-c505-7ead-ba71-9292336da3b4" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019fb3f7-c505-7232-b4ca-34ce70192a35" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_WrittenCommunications_019fb3f7-c505-7232-b4ca-34ce70192a35" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019fb3f7-c505-7191-a0aa-ae5afd48a012" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_SolicitingMaterial_019fb3f7-c505-7191-a0aa-ae5afd48a012" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019fb3f7-c505-7323-b08d-0b91d5a42cd1" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_PreCommencementTenderOffer_019fb3f7-c505-7323-b08d-0b91d5a42cd1" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019fb3f7-c505-7a7c-873e-177ce5275874" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019fb3f7-c505-7a7c-873e-177ce5275874" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019fb3f7-c505-77cf-acef-693f0a1cfb51" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_Security12bTitle_019fb3f7-c505-77cf-acef-693f0a1cfb51" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019fb3f7-c505-7d2e-9f25-2da281c6b209" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_TradingSymbol_019fb3f7-c505-7d2e-9f25-2da281c6b209" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019fb3f7-c505-7223-bb1b-93f7fc14e198" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_SecurityExchangeName_019fb3f7-c505-7223-bb1b-93f7fc14e198" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019fb3f7-c505-7aa5-a1b2-07d1b6dcecb5" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_EntityEmergingGrowthCompany_019fb3f7-c505-7aa5-a1b2-07d1b6dcecb5" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019fb3f7-c505-7eb1-852e-008679f18295" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_AmendmentFlag_019fb3f7-c505-7eb1-852e-008679f18295" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019fb3f7-c505-7afe-ab8d-7c04a8f55cdf" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019fb3f7-c505-76de-b18b-bd6605386f9a" xlink:to="loc_dei_EntityCentralIndexKey_019fb3f7-c505-7afe-ab8d-7c04a8f55cdf" xlink:type="arc" order="21"/>
  </link:definitionLink>
</link:linkbase>
