| Acronym | Definition |
|---|
| OSAC➣Overseas Security Advisory Council (US State Department) |
| OSAC➣Operator Services Assistance Center |
| OSAC➣Oregon Student Assistance Commission |
| OSAC➣Oregon Office of Student Access and Completion (Eugene, OR) |
| OSAC➣Organization of Saskatchewan Arts Councils |
| OSAC➣Overseas Schools Advisory Council |
| OSAC➣Operational Support Airlift Command (United States Army) |
| OSAC➣Oregon State Agricultural College |
| OSAC➣Owen Sound Aquatic Club (ON, Canada) |
| OSAC➣Ocean Surveillance Analysis By Computer |