| Abbreviation | Definition |
|---|---|
| WLYC | Wequaquet Lake Yacht Club |
| WMA | World Masters Athletics |
| WMAA | World Martial Arts Association |
| WMAF | World Martial Arts Federation |
| WMAJA | World MasterAthlete Judo Association |
| WMAS | World Martial Arts Society |
| WMAW | Western Martial Arts Workshop |
| WMB | We Mean Business Bowling Club |
| WMBA | Westchester Mountain Bike Association |
| WMBA | Wisconsin Mountain Bike Association |
| WMBF | Whistler Mountain Bike Festival |
| WMBI | Workout Musclebuilding & Bodybuilding in Isleworth |
| WMBL | Wimbledon |
| WMBU | Western Maine Board of Baseball Umpires |
| WMC | Walking Marathon Conference |
| WMCC | Wichita Mountains Climbers Coalition |
| WMCG | West Michigan Computer Gamers |
| WMCJ | White Men Can't Jump |
| WMDA | Western Maryland Dart Association |
| WMDK | World Moo Duk Kwan |