OBSA
| Acronym | Definition |
|---|---|
| OBSA | Obligation à Bon de Souscription d'Action (French: Bond Purchase Underwriting Agenda) |
| OBSA | Office of Black Student Affairs |
| OBSA | Outward Bound South Africa (est. 1992) |
| OBSA | Ontario Billiards and Snooker Association (Canada) |
| OBSA | Observatory of Sustainability in Aviation (Spain; est. 2007) |
| OBSA | Off-Balance Sheet Activity |
| OBSA | Off-Balance Sheet Arrangement |