| Acronym | Definition |
|---|
| RFSA➣Russian Federal Space Agency |
| RFSA➣Rural Fire Service Association (NSW RFS) |
| RFSA➣Request for Supply Arrangement (Canadian government) |
| RFSA➣Retired Faculty-Staff Association |
| RFSA➣Radio Free San Andreas (software tool) |
| RFSA➣Research Fellow of SHAPE (Society of Health and Physical Educators) America |
| RFSA➣Readiness for Sea Assessment (US Navy) |
| RFSA➣Realm of the Free Small Astros (gaming guild) |