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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001209191-09-057380.txt : 20091216
<SEC-HEADER>0001209191-09-057380.hdr.sgml : 20091216
<ACCEPTANCE-DATETIME>20091216161242
ACCESSION NUMBER:		0001209191-09-057380
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20091214
FILED AS OF DATE:		20091216
DATE AS OF CHANGE:		20091216

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			METLIFE INC
		CENTRAL INDEX KEY:			0001099219
		STANDARD INDUSTRIAL CLASSIFICATION:	LIFE INSURANCE [6311]
		IRS NUMBER:				134075851
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1095 AVENUE OF AMERICAS
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		212-578-5500

	MAIL ADDRESS:	
		STREET 1:		1095 AVENUE OF AMERICAS
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TOPPETA WILLIAM J
		CENTRAL INDEX KEY:			0001215209

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15787
		FILM NUMBER:		091244760

	MAIL ADDRESS:	
		STREET 1:		200 PARK AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10166
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-12-14</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001099219</issuerCik>
        <issuerName>METLIFE INC</issuerName>
        <issuerTradingSymbol>MET</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001215209</rptOwnerCik>
            <rptOwnerName>TOPPETA WILLIAM J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 PARK AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10166</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President, International</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-12-14</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1961</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>36.97</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>129666</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>344</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By the MetLife Policyholder Trust</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Reinvestment of dividends on shares held in Reporting Person's share deferral account (the &quot;Plan Account&quot;) pursuant to the MetLife Deferred Compensation Plan for Officers.  The amount of shares beneficially owned following the reported transaction may include adjustments in the Reporting Person's Plan Account to reflect the accumulation of fractional shares into whole shares.</footnote>
        <footnote id="F2">Shares held in trust under the MetLife Policyholder Trust established to hold shares of Common Stock allocated to eligible policyholders of Metropolitan Life Inurance Company, a wholly-owned subsidiary of MetLife, Inc.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Jeffrey A. Welikson, authorized signer</signatureName>
        <signatureDate>2009-12-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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