| Abbreviation | Definition |
|---|---|
| CWAC | Chicago Wolfpack Aquatic Club |
| CWAC | Chicago Wolfpack Aquatics Club |
| CWC | California Writers Club |
| CWC | Chatham Wrestling Club |
| CWC | Colleyville Woman's Club |
| CWCV | Catholic Walking Club of Victoria |
| CWF | Club Wrestling Federation |
| CWMM | Club de Windsurf Mar Menor |
| CWPC | Cleveland Water Polo Club |
| CWRC | Chequamegon Wildlife and Recreation Club |
| CWSC | Calgary West Soccer Club |
| CWSC | Carolina West Shooting Club Carolina West Shooting Club |
| CWSC | Central Whidbey Soccer Club |
| CWSC | Central Wisconsin Sportsmens Club |
| CWSC | Central Wisconsin Subaru Club |
| CWSC | Chelsea and Westminster Swimming Club |
| CWSC | Cincinnati West Soccer Club |
| CWTC | Chichester Westgate Triathlon Club |
| CYC | California Yacht Club |
| CYC | Canandaigua Yacht Club |