<?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>0001707073</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>



        </filerInfo>
    </headerData>
    <formData>
        <issuerInfo>
            <issuerCik>0000785786</issuerCik>
            <issuerName>PLEXUS CORP.</issuerName>
            <secFileNumber>001-14423</secFileNumber>
            <issuerAddress>
                <ns2:street1>ONE PLEXUS WAY</ns2:street1>
                <ns2:city>NEENAH</ns2:city>
                <ns2:stateOrCountry>WI</ns2:stateOrCountry>
                <ns2:zipCode>54957</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>9209696000</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>KAREN M RAPP</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>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>1000</noOfUnitsSold>
            <aggregateMarketValue>131730.00</aggregateMarketValue>
            <noOfUnitsOutstanding>27089961</noOfUnitsOutstanding>
            <approxSaleDate>05/30/2025</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>01/21/2020</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock Units</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1000</amountOfSecuritiesAcquired>
            <paymentDate>01/21/2020</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for KAREN M RAPP</name>
                <address>
                    <ns2:street1>ONE PLEXUS WAY</ns2:street1>
                    <ns2:city>NEENAH</ns2:city>
                    <ns2:stateOrCountry>WI</ns2:stateOrCountry>
                    <ns2:zipCode>54957</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>02/28/2025</saleDate>
            <amountOfSecuritiesSold>500</amountOfSecuritiesSold>
            <grossProceeds>65605.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <remarks>The securities to be sold were acquired upon the vesting of restricted stock units during the period of 01/21/2020 through 01/27/2021
</remarks>
        <noticeSignature>
            <noticeDate>05/30/2025</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>02/28/2024</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Karen M. Rapp</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
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144
0001707073
XXXXXXXX
LIVE
0000785786
PLEXUS CORP.
001-14423
ONE PLEXUS WAY
NEENAH
WI
54957
9209696000
KAREN M RAPP
Director
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
1000
131730.00
27089961
05/30/2025
NASDAQ
Common
01/21/2020
Restricted Stock Units
Issuer
N
1000
01/21/2020
N/A
N
10b5-1 Sales for KAREN M RAPP
ONE PLEXUS WAY
NEENAH
WI
54957
Common
02/28/2025
500
65605.00
The securities to be sold were acquired upon the vesting of restricted stock units during the period of 01/21/2020 through 01/27/2021
05/30/2025
02/28/2024
/s/ Karen M. Rapp