| WESCO COMPANY LIMITED | Private company limited by shares | Dissolved |
| WESCO HK LIMITED | Private company limited by shares | Live |
| WESCO ASIA COMPANY LIMITED | Private company limited by shares | Live |
| WESCO ENTERPRISES LIMITED | Private company limited by shares | Live |
| WESCO LEISURE LIMITED | Private company limited by shares | Dissolved |
| WESCO SHIPPING LIMITED | | Live |
| WESCOL LIMITED | Private company limited by shares | Dissolved |
| WESCOL (HONG KONG) LIMITED | Private company limited by shares | Live |
| WESCOL INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Wescom Group Limited | Private company limited by shares | Live |
| WESCOM HOLDINGS LIMITED | Private company limited by shares | Live |
| WESCOM INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| WESCOMM LIMITED | Private company limited by shares | Dissolved |
| WESCOMM ASIA LIMITED | Private company limited by shares | Live |
| WESCOMM HOLDINGS LIMITED | Private company limited by shares | Live |
| WESCOMM PRECISION METAL PRODUCTS LIMITED | Private company limited by shares | Live |
| WESCON LIMITED | Private company limited by shares | Live |
| WESCON IT LIMITED | Private company limited by shares | Live |
| WESCON INVESTMENTS LIMITED | Private company limited by shares | Live |
| WESCORE LIMITED | Private company limited by shares | Live |
| WESCORP LIMITED | Private company limited by shares | Live |
| WESCOWK TECH LIMITED | | Live |