OGSA
| 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) |