| Abbreviation | Definition |
|---|---|
| WHIA | World Health Imaging Alliance |
| WHIA | World Hope International Azerbaijan |
| WHIH | World Healing Institute Of Hawaii |
| WHINSEC | Western Hemisphere INstitute for SEcurity Cooperation |
| WHOA | Working to Halt Online Abuse |
| WHOF | Women Helping Others Foundation |
| WHPA | West Hollywood Preservation Alliance |
| WHPT | Wallingford Historic Preservation Trust |
| WHQ | World Head Quarters |
| WHRF | William Harvey Research Foundation |
| WHS | Washington Humane Society |
| WHS | Wisconsin Historical Society |
| WHT | Wildlife Heritage Trust of Sri Lanka |
| WHWC | Wright House Wellness Center |
| WHWF | Wild Heart Wildlife Foundation |
| WHWF | William Holden Wildlife Foundation |
| WHWN | We Have, We Need |
| WHWT | Women Hear for Women There |
| WI | Wiesenthal Institute |
| WI | Wilderness Inquiry |