<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <headerData>
    <submissionType>SCHEDULE 13G</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001224962</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <securitiesClassTitle>Ordinary shares, nominal value Euro 0.01 per share</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>12/13/2024</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001756594</issuerCik>
        <issuerName>Inventiva S.A.</issuerName>
        <issuerCusip>46124U107</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <street1 xmlns="http://www.sec.gov/edgar/common">50 rue de Dijon</street1>
          <city xmlns="http://www.sec.gov/edgar/common">Daix</city>
          <stateOrCountry xmlns="http://www.sec.gov/edgar/common">I0</stateOrCountry>
          <zipCode xmlns="http://www.sec.gov/edgar/common">21121</zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(c)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Perceptive Advisors LLC</reportingPersonName>
      <citizenshipOrOrganization>DE</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>5555555</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>5555555</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5555555</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>5.8</classPercent>
      <typeOfReportingPerson>IA</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Joseph Edelman</reportingPersonName>
      <citizenshipOrOrganization>X1</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>5555555</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>5555555</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5555555</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>5.8</classPercent>
      <typeOfReportingPerson>IN</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Perceptive Life Sciences Master Fund, Ltd.</reportingPersonName>
      <citizenshipOrOrganization>E9</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>5555555</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>5555555</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5555555</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>5.8</classPercent>
      <typeOfReportingPerson>CO</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>Inventiva S.A.</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>50 rue de Dijon, 21121 Daix France</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>The names of the persons filing this report (collectively, the "Reporting Persons") with respect to the Ordinary shares, nominal value Euro 0.01 per share (the "Ordinary Shares") of Inventiva S.A. (the "Issuer") are:

Perceptive Advisors LLC ("Perceptive Advisors")
Joseph Edelman ("Mr. Edelman")
Perceptive Life Sciences Master Fund, Ltd. ("Master Fund")</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>The address of the principal business office of each of the Reporting Persons is:
51 Astor Place, 10th Floor, New York, NY 10003</principalBusinessOfficeOrResidenceAddress>
        <citizenship>Perceptive Advisors is a Delaware limited liability company.
Mr. Edelman is a United States citizen.
The Master Fund is a Cayman Islands corporation.</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>Y</notApplicableFlag>
      </item3>
      <item4>
        <amountBeneficiallyOwned>The information required by this item with respect to each Reporting Person is set forth in Rows 5 through 9 and 11 of the cover page to this Schedule 13G. The ownership percentages reported are based on are based on 95,662,391 shares outstanding as of December 31, 2024, as disclosed by Inventiva S.A. on its website accordance with article 223-16 of the general regulations of the AMF (French Financial Markets Authority), and gives effect to the exercise of the Pre-Funded Warrants (as defined below) held by the Master Fund.

The Master Fund holds 5,555,555 Ordinary Shares and 1,851,851 pre-funded warrants exercisable for 1,851,851 Ordinary Shares (the "Pre-Funded Warrants"). The Pre-Funded Warrants cannot be exercised if, after giving effect to such exercise, the Reporting Persons' beneficial ownership would exceed 4.99% of the outstanding Ordinary Shares. Accordingly, the Pre-Funded Warrants cannot currently be exercised. Perceptive Advisors serves as the investment manager to the Master Fund. Mr. Edelman is the managing member of Perceptive Advisors.</amountBeneficiallyOwned>
        <classPercent>Perceptive Advisors: 5.8%
Mr. Edelman: 5.8%
Master Fund: 5.8</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>Perceptive Advisors: 0
Mr. Edelman: 0
Master Fund: 0</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>Perceptive Advisors: 5,555,555
Mr. Edelman: 5,555,555
Master Fund: 5,555,555</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>Perceptive Advisors: 0
Mr. Edelman: 0
Master Fund: 0</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>Perceptive Advisors: 5,555,555
Mr. Edelman: 5,555,555
Master Fund: 5,555,555</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>N</notApplicableFlag>
        <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.</certifications>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>Perceptive Advisors LLC</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Joseph Edelman</signature>
        <title>Joseph Edelman, Managing Member</title>
        <date>03/26/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Joseph Edelman</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Joseph Edelman</signature>
        <title>Joseph Edelman</title>
        <date>03/26/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Perceptive Life Sciences Master Fund, Ltd.</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Joseph Edelman</signature>
        <title>Joseph Edelman, Managing Member</title>
        <date>03/26/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>

</edgarSubmission>
