<SEC-DOCUMENT>0001055160-11-000038.txt : 20111216
<SEC-HEADER>0001055160-11-000038.hdr.sgml : 20111216
<ACCEPTANCE-DATETIME>20111216120022
ACCESSION NUMBER:		0001055160-11-000038
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20111215
FILED AS OF DATE:		20111216
DATE AS OF CHANGE:		20111216

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FREYDBERG RONALD A
		CENTRAL INDEX KEY:			0001203598

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13991
		FILM NUMBER:		111265394

	MAIL ADDRESS:	
		STREET 1:		C/O MFA MORTGAGE INVESTMENTS, INC.
		STREET 2:		350 PARK AVENUE, 21ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MFA FINANCIAL, INC.
		CENTRAL INDEX KEY:			0001055160
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				133974868
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		350 PARK AVENUE
		STREET 2:		21ST FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		2122076400

	MAIL ADDRESS:	
		STREET 1:		350 PARK AVE
		STREET 2:		21ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MFA MORTGAGE INVESTMENTS
		DATE OF NAME CHANGE:	20020809

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AMERICA FIRST MORTGAGE INVESTMENTS INC
		DATE OF NAME CHANGE:	19980211
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0304</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2011-12-15</periodOfReport>

    <dateOfOriginalSubmission>2011-12-16</dateOfOriginalSubmission>

    <issuer>
        <issuerCik>0001055160</issuerCik>
        <issuerName>MFA FINANCIAL, INC.</issuerName>
        <issuerTradingSymbol>MFA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001203598</rptOwnerCik>
            <rptOwnerName>FREYDBERG RONALD A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MFA FINANCIAL, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>350 PARK AVENUE, 20TH  FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Executive Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2011-12-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>14472</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>408195</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/Ronald A. Freydberg</signatureName>
        <signatureDate>2011-12-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
