OSAA
| Acronym | Definition |
|---|---|
| OSAA | Oregon School Activities Association |
| OSAA | Office of the Special Adviser on Africa (United Nations body) |
| OSAA | Operational Support Airlift Agency |
| OSAA | Office of the Sergeant-At-Arms (Philippines) |
| OSAA | Ocean State Aquaculture Association |
| OSAA | Operational Satellite Active Archive |