<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:ns2="http://www.sec.gov/edgar/common">
    <headerData>
        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001833511</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001422930</issuerCik>
            <issuerName>PUBMATIC INC</issuerName>
            <secFileNumber>001-39748</secFileNumber>
            <issuerAddress>
                <ns2:street1>601 MARSHALL STREET</ns2:street1>
                <ns2:city>Redwood City</ns2:city>
                <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                <ns2:zipCode>94063</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>6503313485</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>RAJEEV GOEL</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
                <relationshipToIssuer>10% Stockholder</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>8500</noOfUnitsSold>
            <aggregateMarketValue>117555.00</aggregateMarketValue>
            <noOfUnitsOutstanding>38180751</noOfUnitsOutstanding>
            <approxSaleDate>07/02/2026</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>07/02/2026</acquiredDate>
            <natureOfAcquisitionTransaction>Exercise of Stock Options</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>8500</amountOfSecuritiesAcquired>
            <paymentDate>07/02/2026</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for RAJEEV KUMAR GOEL</name>
                <address>
                    <ns2:street1>601 MARSHALL STREET</ns2:street1>
                    <ns2:city>Redwood City</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94063</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>07/01/2026</saleDate>
            <amountOfSecuritiesSold>17176</amountOfSecuritiesSold>
            <grossProceeds>238990.30</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for RAJEEV KUMAR GOEL</name>
                <address>
                    <ns2:street1>601 MARSHALL STREET</ns2:street1>
                    <ns2:city>Redwood City</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94063</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>06/18/2026</saleDate>
            <amountOfSecuritiesSold>21206</amountOfSecuritiesSold>
            <grossProceeds>239528.13</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for RAJEEV KUMAR GOEL</name>
                <address>
                    <ns2:street1>601 MARSHALL STREET</ns2:street1>
                    <ns2:city>Redwood City</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94063</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>06/18/2026</saleDate>
            <amountOfSecuritiesSold>21871</amountOfSecuritiesSold>
            <grossProceeds>247039.51</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>RAJEEV GOEL</name>
                <address>
                    <ns2:street1>601 MARSHALL STREET</ns2:street1>
                    <ns2:city>Redwood City</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94063</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>06/08/2026</saleDate>
            <amountOfSecuritiesSold>44000</amountOfSecuritiesSold>
            <grossProceeds>498656.40</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>RAJEEV GOEL</name>
                <address>
                    <ns2:street1>601 MARSHALL STREET</ns2:street1>
                    <ns2:city>Redwood City</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94063</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>05/26/2026</saleDate>
            <amountOfSecuritiesSold>44000</amountOfSecuritiesSold>
            <grossProceeds>458207.20</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>RAJEEV GOEL</name>
                <address>
                    <ns2:street1>601 MARSHALL STREET</ns2:street1>
                    <ns2:city>Redwood City</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94063</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>05/14/2026</saleDate>
            <amountOfSecuritiesSold>44000</amountOfSecuritiesSold>
            <grossProceeds>420270.40</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>RAJEEV GOEL</name>
                <address>
                    <ns2:street1>601 MARSHALL STREET</ns2:street1>
                    <ns2:city>Redwood City</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94063</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>04/27/2026</saleDate>
            <amountOfSecuritiesSold>44000</amountOfSecuritiesSold>
            <grossProceeds>430144.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>RAJEEV GOEL</name>
                <address>
                    <ns2:street1>601 MARSHALL STREET</ns2:street1>
                    <ns2:city>Redwood City</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94063</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>04/13/2026</saleDate>
            <amountOfSecuritiesSold>44000</amountOfSecuritiesSold>
            <grossProceeds>380503.20</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>07/02/2026</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>03/05/2026</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Rajeev Goel</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
