| 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 |