| 85808646 | WESCO | WESTERMANN KG | 4546083 |
| 76278944 | WESCO | WESTERMANN KG | 2958928 |
| 79456995 | WESCO | Naber GmbH | — |
| 85286291 | WESCO | INDUSTRIAL WAREHOUSE SOLUTIONS, INC. | 4073449 |
| 88980965 | WESCO | Positec Group Limited | 6374489 |
| 97141252 | WESCO | WESCO Distribution, Inc. | — |
| 88345851 | WESCO | Positec Group Limited | 7895627 |
| 74633459 | WESCO | West Coast Shoe Company | 1948907 |
| 85377215 | WESCO | West Coast Shoe Co. | 4307477 |
| 88985324 | WESCO | Positec Group Limited | 7257040 |
| 88985321 | WESCO | Positec Group Limited | 7295009 |
| 76187870 | WESCO | WESCO DISTRIBUTION, INC. | 2835737 |
| 74269360 | WESCO | WESTERN STATES ENVELOPE COMPANY | 1747080 |
| 85366540 | WESCO | West Coast Shoe Co. | 4111495 |
| 78646330 | WESCO | Positec Group Limited | 4156154 |
| 73777017 | WESCO | WESCO, INC. | 1661847 |
| 88736487 | WESCO | Western Connecticut Hockey Association, Incorporated | — |
| 78981508 | WESCO | Positec Group Limited | 4270204 |
| 74636678 | WESCO | FIRE FACILITIES, INC. | 2189558 |
| 77365236 | WESCO | Wesco, Inc. | 3480348 |
| 81018798 | WESCO | Wesco Truck & Trailer Sales | 1018798 |
| 76167101 | WESCO | WESCO Distribution, Inc. | — |
| 76026108 | WESCO | STEINER COMPANY, INC. | 2440970 |
| 76026107 | WESCO | STEINER COMPANY, INC. | 2440969 |
| 75112908 | WESCO | Warranted Environmental Services Company, LLC | 2052739 |
| 73795028 | WESCO | STEINER COMPANY, INC. | 1659777 |
| 73773516 | WESCO | CU* ANSWERS, INC. | 1555600 |
| 73574326 | WESCO | ALLOY INUDSTRIES, INC. | 1435425 |
| 73453873 | WESCO | SILER CITY MILLS, INC. | 1365850 |
| 73367151 | WESCO | WESCO INDUSTRIAL PRODUCTS, INC. | 1243523 |
| 73071706 | WESCO | WESSANEN OLIEFABRICKEN B.V. | 1065371 |
| 73069307 | WESCO | WESCO INDUSTRIES, INC. | 1057397 |
| 73030138 | WESCO | WETSEL SEED COMPANY INC., THE | 1029036 |
| 72256030 | WESCO | IRO, INC. | 0825704 |
| 72204698 | WESCO | NORTHWEST FOUNDRY & FURNACE CO. | 0811347 |
| 72142473 | WESCO | A. E. Westwood Limited | 0764864 |
| 72106559 | WESCO | WESCO ELECTRICAL COMPANY, INC. | 0731422 |
| 71682204 | WESCO | WESCO INDUSTRIES, INC. | 0621169 |
| 71511524 | WESCO | WEST COAST GROCERY COMPANY | 0444102 |
| 71442210 | WESCO | PIEDMONT COTTON MILLS | 0397161 |
| 71227926 | WESCO | — | 0214895 |