<?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>0001418649</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001262039</issuerCik>
            <issuerName>FORTINET, INC.</issuerName>
            <secFileNumber>001-34511</secFileNumber>
            <issuerAddress>
                <ns2:street1>909 Kifer Road</ns2:street1>
                <ns2:city>Sunnyvale</ns2:city>
                <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                <ns2:zipCode>94086</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>4082357700</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>KEITH JENSEN</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>41160</noOfUnitsSold>
            <aggregateMarketValue>4702941.60</aggregateMarketValue>
            <noOfUnitsOutstanding>766452698</noOfUnitsOutstanding>
            <approxSaleDate>02/19/2025</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>02/19/2025</acquiredDate>
            <natureOfAcquisitionTransaction>Exercise of Stock Options</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>17660</amountOfSecuritiesAcquired>
            <paymentDate>02/19/2025</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>02/01/2025</acquiredDate>
            <natureOfAcquisitionTransaction>RSU &amp; PSU</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>23500</amountOfSecuritiesAcquired>
            <paymentDate>02/01/2025</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for KEITH JENSEN</name>
                <address>
                    <ns2:street1>909 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>11/26/2024</saleDate>
            <amountOfSecuritiesSold>17650</amountOfSecuritiesSold>
            <grossProceeds>1688337.57</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>02/19/2025</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>03/06/2024</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Keith Jensen</signature>
        </noticeSignature>
    </formData>
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144
0001418649
XXXXXXXX
LIVE
0001262039
FORTINET, INC.
001-34511
909 Kifer Road
Sunnyvale
CA
94086
4082357700
KEITH JENSEN
Officer
COMMON
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
41160
4702941.60
766452698
02/19/2025
NASDAQ
Common
02/19/2025
Exercise of Stock Options
Issuer
N
17660
02/19/2025
Cash
Common
02/01/2025
RSU & PSU
Issuer
N
23500
02/01/2025
N/A
N
10b5-1 Sales for KEITH JENSEN
909 Kifer Road
Sunnyvale
CA
94086
COMMON
11/26/2024
17650
1688337.57
02/19/2025
03/06/2024
/s/ Keith Jensen