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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 R7uxcraCFndvS0L0ZsX6JWHDGqSx8TY07blwWlp3ZOEihXSDIEd0V+Vpa04Zuc73
 AX4SNp++tlX86Ix5Ad5Dwg==

<SEC-DOCUMENT>0001209191-03-019082.txt : 20030826
<SEC-HEADER>0001209191-03-019082.hdr.sgml : 20030826
<ACCEPTANCE-DATETIME>20030826172530
ACCESSION NUMBER:		0001209191-03-019082
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030822
FILED AS OF DATE:		20030826

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			THALMAN WILLIAM M
		CENTRAL INDEX KEY:			0001104808
		STATE OF INCORPORATION:			PA

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14989
		FILM NUMBER:		03867202

	MAIL ADDRESS:	
		STREET 1:		C/O WESCO DISTRIBUTION INC
		STREET 2:		225 W 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:				251723345
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		COMMERCE COURT 4 STATION SQUARE
		STREET 2:		STE 700
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15219
		BUSINESS PHONE:		4124542200

	MAIL ADDRESS:	
		STREET 1:		COMMERCE COURT 4 STATION SQUARE
		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>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-08-22</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000929008</issuerCik><issuerName>WESCO INTERNATIONAL INC</issuerName>        <issuerTradingSymbol>WCC</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001104808</rptOwnerCik><rptOwnerName>THALMAN WILLIAM M</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>225 WEST STATION SQUARE DRIVE, SUITE 700</rptOwnerStreet1><rptOwnerStreet2></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>CORPORATE CONTROLLER</officerTitle></reportingOwnerRelations
hip></reportingOwner><derivativeTable><derivativeTransaction><securityTitle><value>Option for WESCO International Common Stock</value></securityTitle><conversionOrExercisePrice><value>5.9</value></conversionOrExercisePrice><transactionDate><value>2003-08-22</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>10000</value></transactionShares><transactionPricePerShare><value>5.9</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><footnoteId id="F1" /></exerciseDate><expirationDate><value>2013-08-22</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>WESCO International Common Stock</value></underlyingSecurit
yTitle><underlyingSecurityShares><value>10000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>10000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Options vest at a rate of 1/3 per year on the anniversary date of the option grant over the next three years.</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>/s/ William M. Thalman</signatureName><signatureDate>2003-08-26</signatureDate></ownerSignature></ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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