| Acronym | Definition |
|---|
| OOSA➣Out of Service Area |
| OOSA➣Office for Outer Space Affairs (United Nations) |
| OOSA➣Offshore Oil Scouts Association (Metairie, LA) |
| OOSA➣Object Oriented Systems Analysis |
| OOSA➣Object-Oriented Software Architecture (computer science workshop) |
| OOSA➣Office of Outreach Services and Alliances (US DOL) |
| OOSA➣Out of State Attorney (volunteer poll worker) |