<SEC-DOCUMENT>0001628280-20-007064.txt : 20200507
<SEC-HEADER>0001628280-20-007064.hdr.sgml : 20200507
<ACCEPTANCE-DATETIME>20200507190525
ACCESSION NUMBER:		0001628280-20-007064
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200507
FILED AS OF DATE:		20200507
DATE AS OF CHANGE:		20200507

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Condas John C
		CENTRAL INDEX KEY:			0001633183

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36844
		FILM NUMBER:		20858190

	MAIL ADDRESS:	
		STREET 1:		9400 SW BEAVERTON-HILLSDALE HWY
		STREET 2:		SUITE 131
		CITY:			BEAVERTON
		STATE:			OR
		ZIP:			97005

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Great Ajax Corp.
		CENTRAL INDEX KEY:			0001614806
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				465211780
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		9400 SW BEAVERTON-HILLSDALE HIGHWAY
		STREET 2:		SUITE 131
		CITY:			BEAVERTON
		STATE:			OR
		ZIP:			97005
		BUSINESS PHONE:		503-295-5800

	MAIL ADDRESS:	
		STREET 1:		9400 SW BEAVERTON-HILLSDALE HIGHWAY
		STREET 2:		SUITE 131
		CITY:			BEAVERTON
		STATE:			OR
		ZIP:			97005
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_158889270763774.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-05-07</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001614806</issuerCik>
        <issuerName>Great Ajax Corp.</issuerName>
        <issuerTradingSymbol>AJX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001633183</rptOwnerCik>
            <rptOwnerName>Condas John C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9400 SW BEAVERTON-HILLSDALE HWY</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 131</rptOwnerStreet2>
            <rptOwnerCity>BEAVERTON</rptOwnerCity>
            <rptOwnerState>OR</rptOwnerState>
            <rptOwnerZipCode>97005</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2020-05-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>867</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>11.54</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>17377</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Payment of director fees for first quarter ended March 31, 2020. Price per share is the average closing price per share for the first five days preceding the record dividend date of March 17, 2020.</footnote>
        <footnote id="F2">Includes 559 shares from a stock dividend paid on March 27, 2020.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ John C Condas</signatureName>
        <signatureDate>2020-05-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
