<SEC-DOCUMENT>0001567619-21-008074.txt : 20210414
<SEC-HEADER>0001567619-21-008074.hdr.sgml : 20210414
<ACCEPTANCE-DATETIME>20210414180358
ACCESSION NUMBER:		0001567619-21-008074
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210414
FILED AS OF DATE:		20210414
DATE AS OF CHANGE:		20210414

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Zillges Nicholas W
		CENTRAL INDEX KEY:			0001855798

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-56269
		FILM NUMBER:		21826780

	MAIL ADDRESS:	
		STREET 1:		500 SCOTT STREET
		CITY:			WAUSAU
		STATE:			WI
		ZIP:			54403

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Marathon Bancorp, Inc. /MD/
		CENTRAL INDEX KEY:			0001835385
		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTIONS, NOT FEDERALLY CHARTERED [6036]
		IRS NUMBER:				862191258
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		500 SCOTT STREET
		CITY:			WAUSAU
		STATE:			WI
		ZIP:			54403
		BUSINESS PHONE:		(715) 845-7331

	MAIL ADDRESS:	
		STREET 1:		500 SCOTT STREET
		CITY:			WAUSAU
		STATE:			WI
		ZIP:			54403
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-04-14</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001835385</issuerCik>
        <issuerName>Marathon Bancorp, Inc. /MD/</issuerName>
        <issuerTradingSymbol>NONE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001855798</rptOwnerCik>
            <rptOwnerName>Zillges Nicholas W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>500 SCOTT STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WAUSAU</rptOwnerCity>
            <rptOwnerState>WI</rptOwnerState>
            <rptOwnerZipCode>54403</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4100</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>20900</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By 401(k)</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <ownerSignature>
        <signatureName>/s/ Benjamin M. Azoff, pursuant to power of attorney</signatureName>
        <signatureDate>2021-04-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
