<SEC-DOCUMENT>0000929008-17-000021-index.html : 20170627
<SEC-HEADER>0000929008-17-000021.hdr.sgml : 20170627
<ACCEPTANCE-DATETIME>20170627170514
ACCESSION NUMBER:		0000929008-17-000021
CONFORMED SUBMISSION TYPE:	11-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20161231
FILED AS OF DATE:		20170627
DATE AS OF CHANGE:		20170627

FILER:

	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

	FILING VALUES:
		FORM TYPE:		11-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14989
		FILM NUMBER:		17933033

	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>11-K
<SEQUENCE>1
<FILENAME>wcc-2016form11k.htm
<DESCRIPTION>FORM 11-K
<TEXT>
Document 1 - file: wcc-2016form11k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23
<SEQUENCE>2
<FILENAME>wcc-2016exhibit23.htm
<DESCRIPTION>EXHIBIT 23
<TEXT>
Document 2 - file: wcc-2016exhibit23.htm

</DOCUMENT>
</SEC-DOCUMENT>