| Abbreviation | Definition |
|---|---|
| WLPA | World League for Protection of Animals |
| WLPF | William Lyon Phelps Foundation |
| WLT | Washtenaw Land Trust |
| WLUF | Wild Life Unlimited Foundation |
| WLUG | Wellington Linux User Group |
| WM | Waiting Member |
| WMAA | World Modern Arnis Alliance |
| WMAV | Western Men Against Violence |
| WMDA | World Marrow Donor Association |
| WMEAC | West Michigan Environmental Action Council |
| WMET | Wilton Montessori Education Trust |
| WMF | WikiMedia Foundation |
| WMF | World Monuments Fund |
| WMFT | White Mountain Forest Trust |
| WMG | Woman Made Gallery |
| WMGAR | Woman Made Gallery Artists' Registry |
| WMHF | Western Maryland Heritage Foundation |
| WMHF | Will Mayfield Heritage Foundation |
| WMHF | Woodland Memorial Health Foundation |
| WMHO | Ward Melville Heritage Organization |