<?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>0001540517</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001561550</issuerCik>
            <issuerName>DATADOG, INC. </issuerName>
            <secFileNumber>001-39051</secFileNumber>
            <issuerAddress>
                <ns2:street1>620 EIGHTH AVENUE, 45TH FLOOR </ns2:street1>
                <ns2:city>NEW YORK </ns2:city>
                <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                <ns2:zipCode>10018</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>8663294466</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>AMIT AGARWAL</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Class A 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>75000</noOfUnitsSold>
            <aggregateMarketValue>7662000.00</aggregateMarketValue>
            <noOfUnitsOutstanding>317257399</noOfUnitsOutstanding>
            <approxSaleDate>05/01/2025</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>08/15/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Previously Exercised Stock Options</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>75000</amountOfSecuritiesAcquired>
            <paymentDate>08/15/2023</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for AMIT AGARWAL</name>
                <address>
                    <ns2:street1>620 EIGHTH AVENUE, 45TH FLOOR </ns2:street1>
                    <ns2:city>NEW YORK </ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10018</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <saleDate>03/21/2025</saleDate>
            <amountOfSecuritiesSold>25000</amountOfSecuritiesSold>
            <grossProceeds>2631250.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for AMIT AGARWAL</name>
                <address>
                    <ns2:street1>620 EIGHTH AVENUE, 45TH FLOOR </ns2:street1>
                    <ns2:city>NEW YORK </ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10018</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <saleDate>03/05/2025</saleDate>
            <amountOfSecuritiesSold>25000</amountOfSecuritiesSold>
            <grossProceeds>2855295.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>AMIT AGARWAL</name>
                <address>
                    <ns2:street1>620 EIGHTH AVENUE, 45TH FLOOR </ns2:street1>
                    <ns2:city>NEW YORK </ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10018</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <saleDate>03/03/2025</saleDate>
            <amountOfSecuritiesSold>10167</amountOfSecuritiesSold>
            <grossProceeds>1177978.10</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for AMIT AGARWAL</name>
                <address>
                    <ns2:street1>620 EIGHTH AVENUE, 45TH FLOOR </ns2:street1>
                    <ns2:city>NEW YORK </ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10018</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <saleDate>02/19/2025</saleDate>
            <amountOfSecuritiesSold>25000</amountOfSecuritiesSold>
            <grossProceeds>3234690.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for AMIT AGARWAL</name>
                <address>
                    <ns2:street1>620 EIGHTH AVENUE, 45TH FLOOR </ns2:street1>
                    <ns2:city>NEW YORK </ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10018</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Class A Common</securitiesClassTitle>
            <saleDate>02/05/2025</saleDate>
            <amountOfSecuritiesSold>25000</amountOfSecuritiesSold>
            <grossProceeds>3577275.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <remarks>Securities to be sold, acquired through RSU/PSU or upon option exercise, were registered on Form S-8. The securities to be sold were acquired upon the exercise of stock options during the period of 8/15/2023 through 8/24/2023.</remarks>
        <noticeSignature>
            <noticeDate>05/01/2025</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>08/16/2024</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Amit Agarwal</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
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144
0001540517
XXXXXXXX
LIVE
0001561550
DATADOG, INC.
001-39051
620 EIGHTH AVENUE, 45TH FLOOR
NEW YORK
NY
10018
8663294466
AMIT AGARWAL
Director
Class A Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
75000
7662000.00
317257399
05/01/2025
NASDAQ
Common
08/15/2023
Previously Exercised Stock Options
Issuer
N
75000
08/15/2023
Cash
N
10b5-1 Sales for AMIT AGARWAL
620 EIGHTH AVENUE, 45TH FLOOR
NEW YORK
NY
10018
Class A Common
03/21/2025
25000
2631250.00
10b5-1 Sales for AMIT AGARWAL
620 EIGHTH AVENUE, 45TH FLOOR
NEW YORK
NY
10018
Class A Common
03/05/2025
25000
2855295.00
AMIT AGARWAL
620 EIGHTH AVENUE, 45TH FLOOR
NEW YORK
NY
10018
Class A Common
03/03/2025
10167
1177978.10
10b5-1 Sales for AMIT AGARWAL
620 EIGHTH AVENUE, 45TH FLOOR
NEW YORK
NY
10018
Class A Common
02/19/2025
25000
3234690.00
10b5-1 Sales for AMIT AGARWAL
620 EIGHTH AVENUE, 45TH FLOOR
NEW YORK
NY
10018
Class A Common
02/05/2025
25000
3577275.00
Securities to be sold, acquired through RSU/PSU or upon option exercise, were registered on Form S-8. The securities to be sold were acquired upon the exercise of stock options during the period of 8/15/2023 through 8/24/2023.
05/01/2025
08/16/2024
/s/ Amit Agarwal