| Acronym | Definition |
|---|
| WASA | Water And Sewer Authority |
| WASA | Wireless Algorithms, Systems and Applications (International Conference) |
| WASA | Washington Association of School Administrators |
| WASA | We Are So Awesome (gaming) |
| WASA | Wax Anti-Settling Additive |
| WASA | Welsh Amateur Swimming Association |
| WASA | Wank Adams Slavin Associates LLP |
| WASA | Wisconsin Agri-Service Association |
| WASA | Wide Angle Shower Apparatus |
| WASA | Western Atlantic Shorebird Association |
| WASA | Western Action Shootists Association |
| WASA | Wealthy Adaptative Search Algorithm |
| WASA | Western Australian Swimming Association |
| WASA | Western Alternative Sports Association |
| WASA | Western Amputee Support Alliance |
| WASA | Water & Sanitation Agency (Lahore, Pakistan) |
| WASA | West Alabama Soccer Association |
| WASA | Wyoming Association of School Administrators |
| WASA | West African Science Association |
| WASA | Wisconsin Adult Soccer Association |
| WASA | Western Australian Soccer Association |
| WASA | Women's Anthropological Society of America |
| WASA | Weapons And Storage Area |
| WASA | World Authority for Spatial Affairs |