<?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>0001254781</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001107843</issuerCik>
            <issuerName>QUALYS INC COM</issuerName>
            <secFileNumber>001-35662</secFileNumber>
            <issuerAddress>
                <ns2:street1> 919 E. Hillsdale Boulevard, 4th Floor</ns2:street1>
                <ns2:city> Foster City</ns2:city>
                <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                <ns2:zipCode>94404</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>6508016100</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>BRUCE K. POSEY</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>38th Fl.</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>2010</noOfUnitsSold>
            <aggregateMarketValue>328614.90</aggregateMarketValue>
            <noOfUnitsOutstanding>36712000</noOfUnitsOutstanding>
            <approxSaleDate>10/11/2023</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>10/11/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Exercise of Stock Options</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1415</amountOfSecuritiesAcquired>
            <paymentDate>10/11/2023</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>08/01/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>595</amountOfSecuritiesAcquired>
            <paymentDate>08/01/2023</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales Plan for BRUCE K. POSEY</name>
                <address>
                    <ns2:street1> 919 E. Hillsdale Boulevard, 4th Floor</ns2:street1>
                    <ns2:city> Foster City</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94404</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>09/20/2023</saleDate>
            <amountOfSecuritiesSold>1579</amountOfSecuritiesSold>
            <grossProceeds>241173.50</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales Plan for BRUCE K. POSEY</name>
                <address>
                    <ns2:street1> 919 E. Hillsdale Boulevard, 4th Floor</ns2:street1>
                    <ns2:city> Foster City</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94404</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>08/21/2023</saleDate>
            <amountOfSecuritiesSold>1578</amountOfSecuritiesSold>
            <grossProceeds>229578.69</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales Plan for BRUCE K. POSEY</name>
                <address>
                    <ns2:street1> 919 E. Hillsdale Boulevard, 4th Floor</ns2:street1>
                    <ns2:city> Foster City</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94404</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>07/20/2023</saleDate>
            <amountOfSecuritiesSold>1597</amountOfSecuritiesSold>
            <grossProceeds>209632.83</grossProceeds>
        </securitiesSoldInPast3Months>
        <remarks>The securities to be sold were and will be received upon the exercise of stock options over the next three months.
</remarks>
        <noticeSignature>
            <noticeDate>10/11/2023</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>08/31/2022</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Bruce K. Posey</signature>
        </noticeSignature>
    </formData>
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144
0001254781
XXXXXXXX
LIVE
0001107843
QUALYS INC COM
001-35662
919 E. Hillsdale Boulevard, 4th Floor
Foster City
CA
94404
6508016100
BRUCE K. POSEY
Officer
COMMON
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
38th Fl.
New York
NY
10004
2010
328614.90
36712000
10/11/2023
NASDAQ
Common
10/11/2023
Exercise of Stock Options
Issuer
N
1415
10/11/2023
Cash
Common
08/01/2023
Restricted Stock Units
Issuer
N
595
08/01/2023
N/A
N
10b5-1 Sales Plan for BRUCE K. POSEY
919 E. Hillsdale Boulevard, 4th Floor
Foster City
CA
94404
Common
09/20/2023
1579
241173.50
10b5-1 Sales Plan for BRUCE K. POSEY
919 E. Hillsdale Boulevard, 4th Floor
Foster City
CA
94404
Common
08/21/2023
1578
229578.69
10b5-1 Sales Plan for BRUCE K. POSEY
919 E. Hillsdale Boulevard, 4th Floor
Foster City
CA
94404
Common
07/20/2023
1597
209632.83
The securities to be sold were and will be received upon the exercise of stock options over the next three months.
10/11/2023
08/31/2022
/s/ Bruce K. Posey