<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:ns2="http://www.sec.gov/edgar/common">
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        <submissionType>144</submissionType>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001647486</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001560327</issuerCik>
            <issuerName>RAPID7 INC</issuerName>
            <secFileNumber>001-37496</secFileNumber>
            <issuerAddress>
                <ns2:street1>120 Causeway Street</ns2:street1>
                <ns2:city>Boston</ns2:city>
                <ns2:stateOrCountry>MA</ns2:stateOrCountry>
                <ns2:zipCode>02114</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>6172471717</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>COREY THOMAS</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
                <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>150000</noOfUnitsSold>
            <aggregateMarketValue>6034500.00</aggregateMarketValue>
            <noOfUnitsOutstanding>63206602</noOfUnitsOutstanding>
            <approxSaleDate>01/02/2025</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>01/02/2025</acquiredDate>
            <natureOfAcquisitionTransaction>Exercise of Stock Options</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>150000</amountOfSecuritiesAcquired>
            <paymentDate>01/02/2025</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <remarks>The securities to be sold were and will be received upon the exercise of stock options over the next three months. The dates of acquisition and payment were and will be the dates of exercise/sale.&#13;
</remarks>
        <noticeSignature>
            <noticeDate>01/02/2025</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>09/04/2024</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Corey Thomas</signature>
        </noticeSignature>
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144
0001647486
XXXXXXXX
LIVE
0001560327
RAPID7 INC
001-37496
120 Causeway Street
Boston
MA
02114
6172471717
COREY THOMAS
Director
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
150000
6034500.00
63206602
01/02/2025
NASDAQ
Common
01/02/2025
Exercise of Stock Options
Issuer
N
150000
01/02/2025
Cash
Y
The securities to be sold were and will be received upon the exercise of stock options over the next three months. The dates of acquisition and payment were and will be the dates of exercise/sale.
01/02/2025
09/04/2024
/s/ Corey Thomas