| Acronym | Definition |
|---|
| OSGA➣Open Grid Services Architecture |
| OSGA➣Off Shore Gaming Association |
| OSGA➣Ontario Seniors' Games Association (Canada) |
| OSGA➣Oklahoma Student Government Association |
| OSGA➣Owen Student Government Association (Vanderbilt University) |
| OSGA➣Office of the Secretary General in Afghanistan |
| OSGA➣Oregon Sheep Growers Association |
| OSGA➣Ontario Seed Growers' Association |
| OSGA➣Ozark Steel Guitar Association |
| OSGA➣Ohio Student Government Association (est. 2007; various universities) |
| OSGA➣Open Source Grid Architecture |
| OSGA➣Open Systems Group Associates |
| OSGA➣Occupational Specialist/Guidance Association |