| Acronym | Definition |
|---|
| OARSA➣Of A Revolution Setlist Archive |
| OARSA➣Office of Applied Research and Safety Assessment (US FDA) |
| OARSA➣Oklahoma Association of Retired School Administrators |
| OARSA➣Oxacillin and Aminoglycoside-Resistant Staphylococcus Aureus (bacteria) |