WIAA
| Acronym | Definition |
|---|---|
| WIAA | Washington Interscholastic Activities Association |
| WIAA | Western India Automobile Association |
| WIAA | Western Insurance Agents Association (Rancho Cordova, CA) |
| WIAA | Wisconsin Interscholastic Athletics Association |
| WIAA | Wisconsin Intercollegiate Athletic Association |
| WIAA | Women in Agriculture Association |