| Abbreviation | Definition |
|---|---|
| WASA | Western Alternative Sports Association |
| WASA | Westerville Amateur Soccer Association |
| WASN | Women's Aggressive Skating Network |
| WASP | Worcestershire All Sports Partnership |
| WASP | World Aquanaut Security Patrol |
| WAT | Wallaby Advanced Tactics |
| WAT | Wolf Attack Team |
| WATL | Washington Area Tennis League |
| WATL | Worms Armageddon Tournament League |
| WATS | Widening Access Through Sport |
| WATVA | Wisconsin All Terrain Vehicle Association |
| WAUG | West African University Games |
| WAVA | Washtenaw Area Volleyball Association |
| WAVA | World Association of Veteran Athletes |
| WAW | Who Are We |
| WAWA | Western Area Wrestling Association |
| WAWC | Wayland Area Wrestling Club |
| WAWF | Whoop-Ass Wrestling Federation |
| WAWV | Walk Across West Virginia |
| WB | Wanna Battle |