| Acronym | Definition |
|---|
| OGSA➣Open Grid Services Architecture |
| OGSA➣Ontario Golf Superintendents' Association (Canada) |
| OGSA➣Olathe Girls Softball Association (Olathe, KS) |
| OGSA➣Ostfriesen Genealogical Society of America |
| OGSA➣Oregon Green Schools Association (Salem, OR) |
| OGSA➣Oceanography Graduate Students Association (Rutgers University; New Jersey) |