<?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>0001775295</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000921299</issuerCik>
      <issuerName>FIBROGEN INC</issuerName>
      <secFileNumber>001-36740</secFileNumber>
      <issuerAddress>
        <com:street1>409 ILLINOIS STREET</com:street1>
        <com:city>SAN FRANCISCO</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>94158</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>415-978-1200</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Chung Christine</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>ETRADE FINANCIALCORPORATION</name>
        <address>
          <com:street1>3 EDISON DRIVE</com:street1>
          <com:city>ALPHARETTA</com:city>
          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>3633</noOfUnitsSold>
      <aggregateMarketValue>61839.49</aggregateMarketValue>
      <noOfUnitsOutstanding>94000000</noOfUnitsOutstanding>
      <approxSaleDate>06/07/2023</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>06/07/2023</acquiredDate>
      <natureOfAcquisitionTransaction>RESTRICTED STOCK</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1362</amountOfSecuritiesAcquired>
      <paymentDate>06/07/2023</paymentDate>
      <natureOfPayment>COMPENSATION</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>06/07/2023</acquiredDate>
      <natureOfAcquisitionTransaction>RESTRICTED STOCK</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>739</amountOfSecuritiesAcquired>
      <paymentDate>06/07/2023</paymentDate>
      <natureOfPayment>COMPENSATION</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>06/07/2023</acquiredDate>
      <natureOfAcquisitionTransaction>RESTRICTED STOCK</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1532</amountOfSecuritiesAcquired>
      <paymentDate>06/07/2023</paymentDate>
      <natureOfPayment>COMPENSATION</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>FBO Christine (Chris) Chung</name>
        <address>
          <com:street1>4005 Windward Plaza Drive</com:street1>
          <com:city>Alpharett</com:city>
          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>RESTRICTED STOCK</securitiesClassTitle>
      <saleDate>03/08/2023</saleDate>
      <amountOfSecuritiesSold>832</amountOfSecuritiesSold>
      <grossProceeds>17601.71</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>FBO Christine (Chris) Chung</name>
        <address>
          <com:street1>4005 Windward Plaza Drive</com:street1>
          <com:city>Alpharetta</com:city>
          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>RESTRICTED STOCK</securitiesClassTitle>
      <saleDate>03/08/2023</saleDate>
      <amountOfSecuritiesSold>1227</amountOfSecuritiesSold>
      <grossProceeds>25958.29</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>FBO Christine (Chris) Chung</name>
        <address>
          <com:street1>4005 Windward Plaza Drive</com:street1>
          <com:city>Alpharetta</com:city>
          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>RESTRICTED STOCK</securitiesClassTitle>
      <saleDate>03/08/2023</saleDate>
      <amountOfSecuritiesSold>666</amountOfSecuritiesSold>
      <grossProceeds>14089.83</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>FBO Christine (Chris) Chung</name>
        <address>
          <com:street1>4005 Windward Plaza Drive</com:street1>
          <com:city>Alpharetta</com:city>
          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>RESTRICTED STOCK</securitiesClassTitle>
      <saleDate>03/08/2023</saleDate>
      <amountOfSecuritiesSold>5629</amountOfSecuritiesSold>
      <grossProceeds>119086.56</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>FBO Christine (Chris) Chung</name>
        <address>
          <com:street1>4005 Windward Plaza Drive</com:street1>
          <com:city>Alpharetta</com:city>
          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>PSU TSR Grant</securitiesClassTitle>
      <saleDate>03/10/2023</saleDate>
      <amountOfSecuritiesSold>4692</amountOfSecuritiesSold>
      <grossProceeds>94765.73</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>FBO Christine (Chris) Chung</name>
        <address>
          <com:street1>4005 Windward Plaza Drive</com:street1>
          <com:city>Alpharetta</com:city>
          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>PSU Milestone Grant</securitiesClassTitle>
      <saleDate>03/10/2023</saleDate>
      <amountOfSecuritiesSold>2914</amountOfSecuritiesSold>
      <grossProceeds>58854.93</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>FBO Christine (Chris) Chung</name>
        <address>
          <com:street1>4005 Windward Plaza Drive</com:street1>
          <com:city>Alpharetta</com:city>
          <com:stateOrCountry>GA</com:stateOrCountry>
          <com:zipCode>30005</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>RESTRICTED STOCK</securitiesClassTitle>
      <saleDate>04/04/2023</saleDate>
      <amountOfSecuritiesSold>6590</amountOfSecuritiesSold>
      <grossProceeds>123785.24</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>06/06/2023</noticeDate>
      <signature>/s/ Christine Chung</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
