| Abbreviation | Definition |
|---|---|
| WITN | Women in Technology Network |
| WIWA | Whidbey Island Writers Association |
| WKGA | Western Kentucky Goat Association |
| WLAO | White Label ATM Operators |
| WLCA | Western Labor Communications Association |
| WLCA | Wisconsin Landscape Contractors Association |
| WLCA-MM | Wisconsin Landscape Contractors Association of Metro-Milwaukee |
| WLTA | Washington Land Title Association |
| WLTA | Wisconsin Land Title Association |
| WLTA | Wisconsin Library Trustees Association |
| WLUC | Women Life Underwriters Confederation |
| WMA | World Medical Association |
| WMAA | West Milford Artists Association |
| WMCA | Washington Metropolitan Courier Association |
| WMCA | Washington Municipal Clerks Association |
| WMCA | Wisconsin Medical Credit Association |
| WMDA | Washington Metropolitan Delivery Association |
| WMDA | Washington, Maryland, Delaware Service Station and Automotive Repair Association |
| WMDO | World Medical Device Organization |
| WMEA | Western Marketing Educators' Association |