-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001386332-09-000031.txt : 20091030
<SEC-HEADER>0001386332-09-000031.hdr.sgml : 20091030
<ACCEPTANCE-DATETIME>20091030135006
ACCESSION NUMBER:		0001386332-09-000031
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20091028
FILED AS OF DATE:		20091030
DATE AS OF CHANGE:		20091030

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MAERKI HANS ULRICH
		CENTRAL INDEX KEY:			0001207935

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13595
		FILM NUMBER:		091147495

	MAIL ADDRESS:	
		STREET 1:		METTLER TOLEDO INTL INC
		STREET 2:		IM LANGACHER
		CITY:			GREIFENSEE
		STATE:			V8
		ZIP:			99999

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			METTLER TOLEDO INTERNATIONAL INC/
		CENTRAL INDEX KEY:			0001037646
		STANDARD INDUSTRIAL CLASSIFICATION:	LABORATORY ANALYTICAL INSTRUMENTS [3826]
		IRS NUMBER:				133668641
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		IM LANGACHER P O BOX MT-100
		STREET 2:		CH 8606 GREIFENSEE
		CITY:			SWITZERLAND
		STATE:			V8
		ZIP:			10022
		BUSINESS PHONE:		2126445900

	MAIL ADDRESS:	
		STREET 1:		IM LANGACHER
		STREET 2:		P O BOX MT 100 CH 8606 GREIFENSEE
		CITY:			SWITZERLAND
		STATE:			V8
		ZIP:			10022

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	METTLER TOLEDO INTERNATIONAL INC
		DATE OF NAME CHANGE:	19971117

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MT INVESTORS INC
		DATE OF NAME CHANGE:	19970411
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-10-28</periodOfReport>

    <issuer>
        <issuerCik>0001037646</issuerCik>
        <issuerName>METTLER TOLEDO INTERNATIONAL INC/</issuerName>
        <issuerTradingSymbol>MTD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001207935</rptOwnerCik>
            <rptOwnerName>MAERKI HANS ULRICH</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>IM LANGACHER</rptOwnerStreet1>
            <rptOwnerStreet2>CH-8606 GREIFENSEE</rptOwnerStreet2>
            <rptOwnerCity>SWITZERLAND</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2009-10-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>246</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1146</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>90.76</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-10-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3384</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2010-10-28</value>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2019-10-28</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common stock, par value $0.01 per share</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3384</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3384</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents restricted stock units for which shares of MTD common stock will be delivered upon satisfaction of applicable vesting requirements. The restricted stock units vest annually in three equal installments beginning on the first anniversary of the date of grant.</footnote>
        <footnote id="F2">1,146 shares in the total are shares underlying restricted stock units (vested and unvested).</footnote>
        <footnote id="F3">The options vest annually in four equal installments beginning on the first anniversary of the date of grant.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>James Bellerjeau, Power of Attorney</signatureName>
        <signatureDate>2009-10-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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