<?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>0001211436</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0001406666</issuerCik>
            <issuerName>CALIX, INC.</issuerName>
            <secFileNumber>001-34674</secFileNumber>
            <issuerAddress>
                <ns2:street1>2777 ORCHARD PARKWAY</ns2:street1>
                <ns2:city>SAN JOSE</ns2:city>
                <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                <ns2:zipCode>95134</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(707) 766-3000</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>DONALD J LISTWIN</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</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 Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>100000</noOfUnitsSold>
            <aggregateMarketValue>4315220.00</aggregateMarketValue>
            <noOfUnitsOutstanding>66320013</noOfUnitsOutstanding>
            <approxSaleDate>08/04/2023</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>08/27/2009</acquiredDate>
            <natureOfAcquisitionTransaction>Open Market Purchase</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Open Market</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>10767</amountOfSecuritiesAcquired>
            <paymentDate>08/27/2009</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>05/20/2014</acquiredDate>
            <natureOfAcquisitionTransaction>Merger/Acquisition</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>11198</amountOfSecuritiesAcquired>
            <paymentDate>05/20/2014</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>04/30/2013</acquiredDate>
            <natureOfAcquisitionTransaction>Open Market Purchase</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Open Market</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>2658</amountOfSecuritiesAcquired>
            <paymentDate>04/30/2013</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>02/14/2019</acquiredDate>
            <natureOfAcquisitionTransaction>Open Market Purchase</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Open Market</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>12500</amountOfSecuritiesAcquired>
            <paymentDate>02/14/2019</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>02/08/2013</acquiredDate>
            <natureOfAcquisitionTransaction>Open Market Purchase</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Open Market</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>24400</amountOfSecuritiesAcquired>
            <paymentDate>02/08/2013</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>08/27/2009</acquiredDate>
            <natureOfAcquisitionTransaction>Merger/Acquisition</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>38477</amountOfSecuritiesAcquired>
            <paymentDate>08/27/2009</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>08/04/2023</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ Donald John Listwin</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
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144
0001211436
XXXXXXXX
LIVE
0001406666
CALIX, INC.
001-34674
2777 ORCHARD PARKWAY
SAN JOSE
CA
95134
(707) 766-3000
DONALD J LISTWIN
Director
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
38th Floor
New York
NY
10004
100000
4315220.00
66320013
08/04/2023
NYSE
Common
08/27/2009
Open Market Purchase
Open Market
N
10767
08/27/2009
Cash
Common
05/20/2014
Merger/Acquisition
Issuer
N
11198
05/20/2014
Not Applicable
Common
04/30/2013
Open Market Purchase
Open Market
N
2658
04/30/2013
Cash
Common
02/14/2019
Open Market Purchase
Open Market
N
12500
02/14/2019
Cash
Common
02/08/2013
Open Market Purchase
Open Market
N
24400
02/08/2013
Cash
Common
08/27/2009
Merger/Acquisition
Issuer
N
38477
08/27/2009
Not Applicable
Y
08/04/2023
/s/ Donald John Listwin