| Acronym | Definition |
|---|
| WHSA | White Sands National Monument (US National Park Service) |
| WHSA | Wisconsin Head Start Association |
| WHSA | Watchung Hills Soccer Association (New Jersey) |
| WHSA | Whiteface High School Alumni |
| WHSA | Workplace Health and Safety Act 1995 (Australia) |
| WHSA | Workplace Health and Safety Agency (Canada) |
| WHSA | Wadsworth Hall Student Association (Houghton, MI) |
| WHSA | Worldwide Hellenic Student Associations |
| WHSA | Waler Horse Society of Australia Inc. (Australia) |
| WHSA | Wisconsin Health Security Act |
| WHSA | Woods Hole Science Aquarium |
| WHSA | Wellington Home Schoolers Association (New Zealand) |
| WHSA | Wimbledon High School Parents Association (UK) |
| WHSA | White Salmon |
| WHSA | Wyoming Head Start Association (Laramie, WY) |
| WHSA | World Hope South Africa |
| WHSA | Welsh Harp Sailing Association (UK) |
| WHSA | Workshop on Hybrid Systems and Applications |
| WHSA | Weapons Head Support Assembly |
| WHSA | White Hat Security Arsenal |
| WHSA | World Hakka Sibling Assemblage |
| WHSA | Wimbledon High School Association |
| WHSA | Willow Herb Salix Alba |
| WHSA | Weaverham High School Association (UK) |
| WHSA | Worker Healthcare Security Act |
| WHSA | Wholistic Health Sciences Australia |
| WHSA | Whetstone Savannah |
| WHSA | Windsor Historic Sites Association (Canada) |
| WHSA | Washington Head Start Association |
| WHSA | Wooden Half Subassembly |
| WHSA | Welwyn Hatfield Sports Alliance (UK) |
| WHSA | Woolmer Hill Sports Association (UK) |
| WHSA | Workplace Health and Safety Association |
| WHSA | Western High School Alumni (Sheffield, Illinois) |
| WHSA | White House Social Aide (program) |
| WHSA | West Home School Association (Plymouth, MA) |
| WHSA | Washington Health Services Act of 1993 |
| WHSA | Warninglid Home and School Association (UK) |