OGCA
| Acronym | Definition |
|---|---|
| OGCA | Ontario General Contractors Association (Mississauga, Ontario, Canada) |
| OGCA | Office of Grants and Contracts Accounting (various universities) |
| OGCA | Ohio Gun Collectors Association |
| OGCA | Office of Grant and Contract Administration (University of Massachusetts, Amherst; Amherst, MA) |
| OGCA | Open Geospatial Consortium Australasia (est. 2003) |