OOSA
| 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) |