<SEC-DOCUMENT>0001209191-20-041539.txt : 20200707
<SEC-HEADER>0001209191-20-041539.hdr.sgml : 20200707
<ACCEPTANCE-DATETIME>20200707190851
ACCESSION NUMBER:		0001209191-20-041539
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200702
FILED AS OF DATE:		20200707
DATE AS OF CHANGE:		20200707

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Lazzaris Diane
		CENTRAL INDEX KEY:			0001428491

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14989
		FILM NUMBER:		201016950

	MAIL ADDRESS:	
		STREET 1:		WESCO INTERNATIONAL, INC.
		STREET 2:		225 WEST STATION SQUARE DRIVE
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15219

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WESCO INTERNATIONAL INC
		CENTRAL INDEX KEY:			0000929008
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-ELECTRICAL APPARATUS & EQUIPMENT, WIRING SUPPLIES [5063]
		IRS NUMBER:				251723342
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		225 WEST STATION SQUARE DRIVE
		STREET 2:		STE 700
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15219
		BUSINESS PHONE:		4124542200

	MAIL ADDRESS:	
		STREET 1:		225 WEST STATION SQUARE DRIVE
		STREET 2:		STE 700
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15219

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CDW HOLDING CORP
		DATE OF NAME CHANGE:	19971217
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-07-02</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000929008</issuerCik>
        <issuerName>WESCO INTERNATIONAL INC</issuerName>
        <issuerTradingSymbol>WCC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001428491</rptOwnerCik>
            <rptOwnerName>Lazzaris Diane</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>225 WEST STATION SQUARE DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 700</rptOwnerStreet2>
            <rptOwnerCity>PITTSBURGH</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>15219</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP and General Counsel</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-07-02</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>31075</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>31075</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>31075</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each Restricted Stock Unit (&quot;RSU&quot;) represents the contingent right to receive, subject to the terms and conditions set forth in the related Restricted Stock Unit Agreement and the Company's 1999 Long-Term Incentive Plan, either (i) one share of the Company's common stock, par value $0.01 per share (a &quot;Share&quot;) or (ii) a cash payment equal to the Fair Market Value of one Share as of the applicable vesting date, in each case, for each RSU that has vested in accordance with such terms and conditions.</footnote>
        <footnote id="F2">The Restricted Stock Units shall time-vest 30% on the first anniversary of the grant date, 30% on the second anniversary of the grant date, and 40% on the third anniversary of the grant date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Samantha L. O'Donoghue, as Attorney-in-Fact</signatureName>
        <signatureDate>2020-07-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
