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  <schemaVersion>X0202</schemaVersion>
  <headerData>
    <submissionType>13F-NT</submissionType>
    <filerInfo>
      <liveTestFlag>LIVE</liveTestFlag>
      <flags/>
      <filer>
        <credentials>
          <cik>0001756817</cik>
          <ccc>XXXXXXXX</ccc>
        </credentials>
      </filer>
      <periodOfReport>12-31-2024</periodOfReport>
    </filerInfo>
  </headerData>
  <formData>
    <coverPage>
      <reportCalendarOrQuarter>12-31-2024</reportCalendarOrQuarter>
      <isAmendment>false</isAmendment>
      <filingManager>
        <name>Bain Capital Venture Fund 2019, L.P.</name>
        <address>
          <ns1:street1>200 Clarendon Street </ns1:street1>
          <ns1:city>Boston</ns1:city>
          <ns1:stateOrCountry>MA</ns1:stateOrCountry>
          <ns1:zipCode>02116</ns1:zipCode>
        </address>
      </filingManager>
      <reportType>13F NOTICE</reportType>
      <form13FFileNumber>028-21929</form13FFileNumber>
      <otherManagersInfo>
        <otherManager>
          <form13FFileNumber>28-13588</form13FFileNumber>
          <name>Bain Capital Venture Investors, LLC</name>
        </otherManager>
        <otherManager>
          <form13FFileNumber>28-21920</form13FFileNumber>
          <name>Bain Capital Venture Investors 2019, LLC</name>
        </otherManager>
      </otherManagersInfo>
      <provideInfoForInstruction5>Y</provideInfoForInstruction5>
      <additionalInformation>The report on Form 13F for the period ended December 31, 2024 for Bain Capital Venture Fund 2019, L.P. (the "Fund") is being filed by Bain Capital Venture Investors, LLC, which is the manager of Bain Capital Venture Investors 2019, LLC, which is the general partner of the Fund.</additionalInformation>
    </coverPage>
    <signatureBlock>
      <name>Ajay Agarwal</name>
      <title>Partner of Bain Capital Venture Investors, LLC</title>
      <phone>617-516-2000</phone>
      <signature> /s/ Ajay Agarwal</signature>
      <city>Boston </city>
      <stateOrCountry>MA</stateOrCountry>
      <signatureDate>02-14-2025</signatureDate>
    </signatureBlock>
  </formData>
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