| Acronym | Definition |
|---|
| COSG➣Cuba Organic Support Group (est. 1997; UK) |
| COSG➣Council of State Governments |
| COSG➣Coming Out Support Group (University at Buffalo; Buffalo, NY) |
| COSG➣Committee on Seismology and Geodynamics |
| COSG➣Contingency Operations Support Group (USAF) |
| COSG➣Cambridge Occupational Safety Group (UK) |