| Abbreviation | Definition |
|---|---|
| WSC | Work Skills Corporation |
| WSCA | Western States Communication Association |
| WSCH | Washington State Coalition for the Homeless |
| WSEF | West Sioux Educational Foundation |
| WSEF | Wittmann School Education Foundation |
| WSF | Williams Syndrome Foundation |
| WSF | Women's Sports Foundation |
| WSFB | Washington State Farm Bureau |
| WSFB | West Seattle Food Bank |
| WSFC | Washington State Federation of Chapters |
| WSHA | Washington Speech and Hearing Association |
| WSHA | Washington State Horticultural Association |
| WSHA | William Sutton Housing Association |
| WSI | The Wildlife Society, Inc. |
| WSJD | Washington Society of Jewish Deaf |
| WSJF | Walter S. Johnson Foundation |
| WSJL | Wisconsin Society for Jewish Learning |
| WSN | Women's Support Network |
| WSNF | Washington State Nurses Foundation |
| WSOM | We Serve Our Members |