| Abbreviation | Definition |
|---|---|
| WMHS | Whitfield- Murray Historical Society |
| WMHS | Wisconsin Marine Historical Society |
| WMIF | West Maui Improvement Foundation |
| WMKF | William Moses Kunstler Fund for Racial Justice |
| WMKF | World Moosul Kwan Federation |
| WMLS | Western Michigan Legal Services |
| WMNI | Salvation Army - Western Michigan and Northern Indiana Division |
| WMPT | Welsh Mines Preservation Trust |
| WMR | World Medical Relief |
| WMRI | World Medical Relief, Inc. |
| WMTA | Wyoming Music Teachers Association |
| WMTU | West Michigan Trout Unlimited |
| WMW | World Monuments Watch |
| WN | Wales Now |
| WN | Wellness Network |
| WNAC | Wessex Needs Assessment Centre |
| WNF | World Network of Friendship |
| WNF | Worldwide Nature Fund |
| WNI | Wellness Network, Inc. |
| WNLC | Washington Nursing Leadership Council |