BOSA
| Acronym | Definition |
|---|---|
| BOSA | Bootham Old Scholars' Association |
| BOSA | Broomfield Old Students Association (Derbyshire College of Agriculture; UK) |
| BOSA | Bataille Offensive pour la Suprématie Aérienne |
| BOSA | Bannon Open Songwriting Awards |
| BOSA | Bulletin on Sumerian Agriculture (journal) |