VCOS
| Acronym | Definition |
|---|---|
| VCOS | Visual Caching Operating System |
| VCOS | Vespa Club of Seattle |
| VCOS | Visible Caching Operating System |
| VCOS | Volunteer Chief Officer Section |
| VCOS | Volusia County Orchid Society |
| VCOS | Vice Chief of Staff (various organizations) |
| VCOS | Vehicle Control Operating System |
| VCOS | Vehicle Combat Operating System |
| VCOS | Vespa Club Of Sacramento (Sacramento, California) |