| Acronym | Definition |
|---|
| ARSA | Aberrant Right Subclavian Artery (anatomy) |
| ARSA | Arylsulfatase A |
| ARSA | Aeronautical Repair Station Association |
| ARSA | Airheads Radio Survey Archive |
| ARSA | Auto Rétro Sport d'Armorique (French sports car club) |
| ARSA | Airport Radar Service Area |
| ARSA | Automated Radioxenon Sampler/Analyzer |
| ARSA | Akita Rescue Society of America, Inc. (est. 1976) |
| ARSA | Associate of the Royal Scottish Academy |
| ARSA | Alberta River Surfing Association (Calgary, AB, Canada) |
| ARSA | Airborne Reconnaissance and Surveillance Architecture |
| ARSA | Anglican Rite Synod in the Americas |