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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019f04d5-d4a4-73a7-aa96-aa59b89fcaac,g:04b1ca1f-61be-45f7-a25b-de3ae0e22bb8-->
<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.jobyaviation.com/role/DocumentandEntityinformation" xlink:type="simple" xlink:href="joby-20260629.xsd#DocumentandEntityinformation"/>
  <link:definitionLink xlink:role="http://www.jobyaviation.com/role/DocumentandEntityinformation" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_019f04d5-d4a4-71bb-a66a-068a0444c371" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_DocumentInformationTable_019f04d5-d4a4-71bb-a66a-068a0444c371" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019f04d5-d4a4-77c7-8df4-cb2d53088c8a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_019f04d5-d4a4-71bb-a66a-068a0444c371" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019f04d5-d4a4-77c7-8df4-cb2d53088c8a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019f04d5-d4a4-77c7-8df4-cb2d53088c8a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019f04d5-d4a4-77c7-8df4-cb2d53088c8a" xlink:to="loc_us-gaap_ClassOfStockDomain_019f04d5-d4a4-77c7-8df4-cb2d53088c8a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019f04d5-d4a4-7051-a5ef-b8d4731b0a8d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019f04d5-d4a4-77c7-8df4-cb2d53088c8a" xlink:to="loc_us-gaap_ClassOfStockDomain_019f04d5-d4a4-7051-a5ef-b8d4731b0a8d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019f04d5-d4a4-7635-92e1-bb10c40ee521" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019f04d5-d4a4-7051-a5ef-b8d4731b0a8d" xlink:to="loc_us-gaap_CommonStockMember_019f04d5-d4a4-7635-92e1-bb10c40ee521" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_019f04d5-d4a4-7cda-a789-ceb1ab925b82" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WarrantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_019f04d5-d4a4-7051-a5ef-b8d4731b0a8d" xlink:to="loc_us-gaap_WarrantMember_019f04d5-d4a4-7cda-a789-ceb1ab925b82" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019f04d5-d4a4-7ce1-bae3-39ccec0747cb" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_DocumentType_019f04d5-d4a4-7ce1-bae3-39ccec0747cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019f04d5-d4a4-77fa-90f0-1db176420855" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_AmendmentFlag_019f04d5-d4a4-77fa-90f0-1db176420855" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_019f04d5-d4a4-7173-9b15-4de8a0d76408" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_CurrentFiscalYearEndDate_019f04d5-d4a4-7173-9b15-4de8a0d76408" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019f04d5-d4a4-7540-acb6-9c1944b46268" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_DocumentPeriodEndDate_019f04d5-d4a4-7540-acb6-9c1944b46268" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019f04d5-d4a4-70f8-8c3d-741009bcb033" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_EntityRegistrantName_019f04d5-d4a4-70f8-8c3d-741009bcb033" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019f04d5-d4a4-774f-a8b0-82d5e32e5121" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_EntityCentralIndexKey_019f04d5-d4a4-774f-a8b0-82d5e32e5121" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019f04d5-d4a4-764a-9907-8d3408d08e5f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_EntityEmergingGrowthCompany_019f04d5-d4a4-764a-9907-8d3408d08e5f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019f04d5-d4a4-7a16-92fb-5dcbe886e61c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_EntityFileNumber_019f04d5-d4a4-7a16-92fb-5dcbe886e61c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019f04d5-d4a4-7197-b932-262358343e17" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019f04d5-d4a4-7197-b932-262358343e17" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019f04d5-d4a4-7b91-9435-a916717ee8a0" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_EntityTaxIdentificationNumber_019f04d5-d4a4-7b91-9435-a916717ee8a0" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019f04d5-d4a4-7c15-8352-31a0227e4005" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_EntityAddressAddressLine1_019f04d5-d4a4-7c15-8352-31a0227e4005" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_019f04d5-d4a4-7372-a3a7-badeccc58682" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_EntityAddressAddressLine2_019f04d5-d4a4-7372-a3a7-badeccc58682" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019f04d5-d4a4-71c3-9053-05938797d7fc" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_EntityAddressCityOrTown_019f04d5-d4a4-71c3-9053-05938797d7fc" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019f04d5-d4a4-70cc-95de-33b73c18d344" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_EntityAddressStateOrProvince_019f04d5-d4a4-70cc-95de-33b73c18d344" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019f04d5-d4a4-7277-8b58-0bea491b7d46" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_EntityAddressPostalZipCode_019f04d5-d4a4-7277-8b58-0bea491b7d46" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019f04d5-d4a4-7c75-8e7b-5af8d7811f6c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_CityAreaCode_019f04d5-d4a4-7c75-8e7b-5af8d7811f6c" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019f04d5-d4a4-7526-9c77-13392ec6bd4f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_LocalPhoneNumber_019f04d5-d4a4-7526-9c77-13392ec6bd4f" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019f04d5-d4a4-72a3-aa49-e8adfba3e370" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_WrittenCommunications"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_WrittenCommunications_019f04d5-d4a4-72a3-aa49-e8adfba3e370" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019f04d5-d4a4-7024-ac9f-8f4a0a1926c6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SolicitingMaterial"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_SolicitingMaterial_019f04d5-d4a4-7024-ac9f-8f4a0a1926c6" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019f04d5-d4a4-748f-8ff9-244f8e6ccc78" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_PreCommencementTenderOffer_019f04d5-d4a4-748f-8ff9-244f8e6ccc78" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019f04d5-d4a4-7c19-b75d-68797ea760f5" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019f04d5-d4a4-7c19-b75d-68797ea760f5" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019f04d5-d4a4-766d-a0be-44ec6b3b8d44" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_Security12bTitle_019f04d5-d4a4-766d-a0be-44ec6b3b8d44" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019f04d5-d4a4-7d3a-9595-28f61f9268d7" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_TradingSymbol_019f04d5-d4a4-7d3a-9595-28f61f9268d7" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019f04d5-d4a4-790c-ab20-f5451266dbab" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_019f04d5-d4a4-7c55-90f2-87c1ed09ade8" xlink:to="loc_dei_SecurityExchangeName_019f04d5-d4a4-790c-ab20-f5451266dbab" xlink:type="arc" order="23"/>
  </link:definitionLink>
</link:linkbase>
