GBOS
| Acronym | Definition |
|---|---|
| GBOS | Gambia Bureau of Statistics |
| GBOS | GB (Great Britain) Overprints Society (UK) |
| GBOS | Great Basin Outdoor School (Reno, NV) |
| GBOS | Girdwood Board of Supervisors (Alaska) |
| GBOS | Great Bay Osprey Stewards (New Hampshire) |
| GBOS | Green Barn Orchid Supplies (Delray Beach, FL) |
| GBOS | Ground-Based Observational Facilities |