<?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>0002010300</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001035267</issuerCik>
            <issuerName>INTUITIVE SURGICAL INC</issuerName>
            <secFileNumber>000-30713</secFileNumber>
            <issuerAddress>
                <ns2:street1>1020 Kifer Road</ns2:street1>
                <ns2:city>Sunnyvale</ns2:city>
                <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                <ns2:zipCode>94086</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>4085232100</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>MARK BROSIUS</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</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>1714</noOfUnitsSold>
            <aggregateMarketValue>859022.52</aggregateMarketValue>
            <noOfUnitsOutstanding>355130237</noOfUnitsOutstanding>
            <approxSaleDate>03/05/2026</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>02/28/2026</acquiredDate>
            <natureOfAcquisitionTransaction>Performance Stock Units</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>522</amountOfSecuritiesAcquired>
            <paymentDate>02/28/2026</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>02/10/2026</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1192</amountOfSecuritiesAcquired>
            <paymentDate>02/10/2026</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARK BROSIUS</name>
                <address>
                    <ns2:street1>1020 Kifer Road</ns2:street1>
                    <ns2:city>Sunnyvale</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94086</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>03/04/2026</saleDate>
            <amountOfSecuritiesSold>431</amountOfSecuritiesSold>
            <grossProceeds>213426.89</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARK BROSIUS</name>
                <address>
                    <ns2:street1>1020 Kifer Road</ns2:street1>
                    <ns2:city>Sunnyvale</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94086</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>03/04/2026</saleDate>
            <amountOfSecuritiesSold>1931</amountOfSecuritiesSold>
            <grossProceeds>964456.23</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARK BROSIUS</name>
                <address>
                    <ns2:street1>1020 Kifer Road</ns2:street1>
                    <ns2:city>Sunnyvale</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94086</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>03/03/2026</saleDate>
            <amountOfSecuritiesSold>431</amountOfSecuritiesSold>
            <grossProceeds>209974.58</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARK BROSIUS</name>
                <address>
                    <ns2:street1>1020 Kifer Road</ns2:street1>
                    <ns2:city>Sunnyvale</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94086</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>03/03/2026</saleDate>
            <amountOfSecuritiesSold>217</amountOfSecuritiesSold>
            <grossProceeds>106314.22</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARK BROSIUS</name>
                <address>
                    <ns2:street1>1020 Kifer Road</ns2:street1>
                    <ns2:city>Sunnyvale</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94086</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>12/15/2025</saleDate>
            <amountOfSecuritiesSold>464</amountOfSecuritiesSold>
            <grossProceeds>254499.36</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARK BROSIUS</name>
                <address>
                    <ns2:street1>1020 Kifer Road</ns2:street1>
                    <ns2:city>Sunnyvale</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94086</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>12/12/2025</saleDate>
            <amountOfSecuritiesSold>4500</amountOfSecuritiesSold>
            <grossProceeds>2463120.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARK BROSIUS</name>
                <address>
                    <ns2:street1>1020 Kifer Road</ns2:street1>
                    <ns2:city>Sunnyvale</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94086</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>12/12/2025</saleDate>
            <amountOfSecuritiesSold>312</amountOfSecuritiesSold>
            <grossProceeds>170776.32</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>03/05/2026</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>09/12/2025</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Mark Brosius</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
