<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001456065</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001484778</issuerCik>
      <issuerName>ThredUp Inc.</issuerName>
      <secFileNumber>001-40249</secFileNumber>
      <issuerAddress>
        <com:street1>969 BROADWAY</com:street1>
        <com:street2>SUITE 200</com:street2>
        <com:city>OAKLAND</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>94607</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>415-402-5202</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>TRINITY VENTURES X LP</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Shareholder</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Merrill</name>
        <address>
          <com:street1>555 California Street</com:street1>
          <com:street2>Floor 18</com:street2>
          <com:city>San Francisco</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94104</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>295442</noOfUnitsSold>
      <aggregateMarketValue>617473.78</aggregateMarketValue>
      <noOfUnitsOutstanding>80571704</noOfUnitsOutstanding>
      <approxSaleDate>05/28/2024</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <acquiredDate>01/08/2018</acquiredDate>
      <natureOfAcquisitionTransaction>Private Placement</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>295442</amountOfSecuritiesAcquired>
      <paymentDate>01/08/2018</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Trinity Ventures X, LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/03/2024</saleDate>
      <amountOfSecuritiesSold>295</amountOfSecuritiesSold>
      <grossProceeds>531.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Trinity X Entrepreneurs Fund, LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/03/2024</saleDate>
      <amountOfSecuritiesSold>3</amountOfSecuritiesSold>
      <grossProceeds>5.40</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X SIDE-BY-SIDE FUND, LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/03/2024</saleDate>
      <amountOfSecuritiesSold>2</amountOfSecuritiesSold>
      <grossProceeds>3.60</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Trinity Ventures X, LP</name>
        <address>
          <com:street1>325 Sharon Park Dr,</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/06/2024</saleDate>
      <amountOfSecuritiesSold>108264</amountOfSecuritiesSold>
      <grossProceeds>207314.73</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Trinity X Entrepreneurs Fund, LP</name>
        <address>
          <com:street1>325 Sharon Park Dr,</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/06/2024</saleDate>
      <amountOfSecuritiesSold>1072</amountOfSecuritiesSold>
      <grossProceeds>2052.77</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X SIDE-BY-SIDE FUND, LP</name>
        <address>
          <com:street1>325 Sharon Park Dr,</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/06/2024</saleDate>
      <amountOfSecuritiesSold>598</amountOfSecuritiesSold>
      <grossProceeds>1145.11</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY VENTURES X LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/07/2024</saleDate>
      <amountOfSecuritiesSold>309262</amountOfSecuritiesSold>
      <grossProceeds>592650.19</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X ENTREPRENEURS' FUND</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/07/2024</saleDate>
      <amountOfSecuritiesSold>3062</amountOfSecuritiesSold>
      <grossProceeds>5867.85</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X SIDE-BY-SIDE FUND</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/07/2024</saleDate>
      <amountOfSecuritiesSold>1710</amountOfSecuritiesSold>
      <grossProceeds>3276.91</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY VENTURES X LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/10/2024</saleDate>
      <amountOfSecuritiesSold>147058</amountOfSecuritiesSold>
      <grossProceeds>301968.90</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY VENTURES X LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/13/2024</saleDate>
      <amountOfSecuritiesSold>74074</amountOfSecuritiesSold>
      <grossProceeds>152594.37</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY VENTURES X LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/14/2024</saleDate>
      <amountOfSecuritiesSold>100087</amountOfSecuritiesSold>
      <grossProceeds>201361.07</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY VENTURES X LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/15/2024</saleDate>
      <amountOfSecuritiesSold>184686</amountOfSecuritiesSold>
      <grossProceeds>373070.13</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY VENTURES X LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/16/2024</saleDate>
      <amountOfSecuritiesSold>35740</amountOfSecuritiesSold>
      <grossProceeds>73289.73</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X ENTREPRENEURS' FUND LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/10/2024</saleDate>
      <amountOfSecuritiesSold>1456</amountOfSecuritiesSold>
      <grossProceeds>2989.75</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X ENTREPRENEURS' FUND LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/13/2024</saleDate>
      <amountOfSecuritiesSold>733</amountOfSecuritiesSold>
      <grossProceeds>1510.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X ENTREPRENEURS' FUND LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/14/2024</saleDate>
      <amountOfSecuritiesSold>991</amountOfSecuritiesSold>
      <grossProceeds>1993.75</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X ENTREPRENEURS' FUND LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/15/2024</saleDate>
      <amountOfSecuritiesSold>1829</amountOfSecuritiesSold>
      <grossProceeds>3694.62</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X ENTREPRENEURS' FUND LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/16/2024</saleDate>
      <amountOfSecuritiesSold>354</amountOfSecuritiesSold>
      <grossProceeds>725.93</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X SIDE-BY-SIDE FUND, LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/10/2024</saleDate>
      <amountOfSecuritiesSold>813</amountOfSecuritiesSold>
      <grossProceeds>1669.41</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X SIDE-BY-SIDE FUND, LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/13/2024</saleDate>
      <amountOfSecuritiesSold>410</amountOfSecuritiesSold>
      <grossProceeds>844.61</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X SIDE-BY-SIDE FUND, LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/14/2024</saleDate>
      <amountOfSecuritiesSold>1773</amountOfSecuritiesSold>
      <grossProceeds>3489.70</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X SIDE-BY-SIDE FUND, LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/15/2024</saleDate>
      <amountOfSecuritiesSold>1020</amountOfSecuritiesSold>
      <grossProceeds>2060.42</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>TRINITY X SIDE-BY-SIDE FUND, LP</name>
        <address>
          <com:street1>325 Sharon Park Dr</com:street1>
          <com:city>Menlo Park</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94025</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Class A</securitiesClassTitle>
      <saleDate>05/16/2024</saleDate>
      <amountOfSecuritiesSold>198</amountOfSecuritiesSold>
      <grossProceeds>406.03</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>05/28/2024</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>03/15/2024</planAdoptionDate>
      </planAdoptionDates>
      <signature>Lyle McCulloch</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
