| Abbreviation | Definition |
|---|---|
| WRSA | World Rabbit Science Association |
| WRT | Wildlife Rehabilitation Today |
| WRVJ | Wildlife Rescue Veterinarian Association of Japan |
| WRWO | Wild Rogue Wilderness Ophiolite |
| WS | Week's Spawn |
| WS | Working Samoyed |
| WSAL | Wildlife Spatial Analysis Laboratory |
| WSAR | Wilderness Search & Rescue |
| WSAVA | World Small Animal Veterinary Association |
| WSBJ | Wild Bird Society of Japan |
| WSC | Wildlife Saving Centre |
| WSCT | West Slope Cutthroat Trout |
| WSCX | Wildlife Saving Centre, Xining |
| WSDO | Atlantic White Sided DOlphin |
| WSHC | Wisconsin State Horse Council |
| WSHE | Western Skies Horse Emporium |
| WSHS | West Suburban Humane Society |
| WSK | Warm Springs Katahdin Ewe |
| WSL | World Species List |
| WSM | Weston Super Mare |