AHSA
| Acronym | Definition |
|---|---|
| AHSA | American Horse Shows Association (1918-2001; became USAE in 2003, became USEF in 2003) |
| AHSA | American Humanics Student Association |
| AHSA | American Hampshire Sheep Association |
| AHSA | Antigonish Highland Skateboarding Association (Antigonish, Nova Scotia, Canada) |
| AHSA | Astilleros de Huelva Sociedad Anonima |
| AHSA | Automatic Header Sensitivity Adjustment |