| Abbreviation | Definition |
|---|---|
| WCQT | Western Counties Qualifying Time |
| WCRA | Western Canadian Reining Association |
| WCRT | World Championship Ride Tie |
| WCRU | Waukesha County Referee Unit |
| WCS | Wisconsin Challenge Series |
| WCS | World Championship Series |
| WCS | Wymondham College Skateboarders |
| WCSA | Wayne County Soccer Association |
| WCSA | World Class Soaring Association |
| WCSA | World Cup Stacking Association |
| WCSA | Wyandotte County Sports Association |
| WCSC | Walnut Creek Soccer Club |
| WCSC | Western Carolina Sailing Club |
| WCT | World Champion Tennis |
| WCT | World Championship Tour |
| WCT | World Championship Tournament |
| WCT | World Curling Tour |
| WCTE | World Curling Tour Europe |
| WCUA | West Coast Umpire Association |
| WCUP | NASCAR Winston Cup Series |