| Abbreviation | Definition |
|---|---|
| WA | Western Australia |
| WAAO | Wisconsin Association of Assessing Officers |
| WABO | Washington Association of Building Officials |
| WACA | Walnut Canyon National Monument ( National Park Service) |
| WACAA | Wisconsin Association of County Agricultural Agents |
| WACD | Wyoming Association of Conservation Districts |
| WADC | Water Authority Of Dickson County |
| WAGI | Wisconsin Adjusted Gross Income |
| WAHI | Washington Heights and Inwood (two districts of New York City) |
| WAIA | Washington Alcohol Impact Area |
| WAPC | Water Action Plan Committee |
| WAPDA | Water And Power Development Authority |
| WAPF | Western Area Peninsula Forest |
| WAPP | West Africa Parliaments Programme |
| WAPP | West African Power Pool |
| WASA | Water And Sewer Authority |
| WASB | Wisconsin Association of School Boards |
| WASD | Water And Sewer Department |
| WASHTO | The Western Association Of State Highway Transportation Officials |
| WATS | Washtenaw Area Transportation Study |