OSFA
| Acronym | Definition |
|---|---|
| OSFA | One Size Fits All |
| OSFA | Office of Student Financial Assistance (various locations) |
| OSFA | Oklahoma State Firefighters Association |
| OSFA | Oregon State Fiscal Association |
| OSFA | Ohio State Firefighters Association |
| OSFA | One Sin for All (band) |
| OSFA | Orion School and Foundation for Astrology |
| OSFA | Ozark Science Fiction Association (1960's St. Louis fanclub) |
| OSFA | Orthopedic Surgery of the Foot and Ankle |