<SEC-DOCUMENT>0000929008-20-000034-index.html : 20200528
<SEC-HEADER>0000929008-20-000034.hdr.sgml : 20200528
<ACCEPTANCE-DATETIME>20200528065426
ACCESSION NUMBER:		0000929008-20-000034
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		2
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20191231
</ITEM>
<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20191231
</ITEM>
</RULE>
FILED AS OF DATE:		20200528
DATE AS OF CHANGE:		20200528

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:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14989
		FILM NUMBER:		20916890

	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>SD
<SEQUENCE>1
<FILENAME>wcc-2019formsd.htm
<DESCRIPTION>FORM SD
<TEXT>
Document 1 - file: wcc-2019formsd.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>wcc-2019cmrexhibit.htm
<DESCRIPTION>CONFLICT MINERALS REPORT
<TEXT>
Document 2 - file: wcc-2019cmrexhibit.htm

</DOCUMENT>
</SEC-DOCUMENT>