| OSFA | Oregon State Fiscal Association | 俄勒冈州财政协会 |
| OSFA | Oklahoma State Firefighters Association | 俄克拉荷马州消防员协会 |
| OSFA | Ozark Science Fiction Association (1960's St. Louis fanclub) | 足迹深入奥沙克科幻小说协会(1960年的斗争路易歌迷会月份) |
| OSFA | Ohio State Firefighters Association | 俄亥俄州消防员协会 |
| OSFA | One Size Fits All | 一种尺码适合所有人 |
| OSFA | Office of Student Financial Assistance | 学生资助办公室 |
| OSFA | Orion School and Foundation for Astrology | 猎户座学派和占星学基金会 |
| OSFA | Orthopedic Surgery of the Foot and Ankle | 足踝矫形外科 |