| Acronym | Definition |
|---|
| COSC➣Contrôle Officiel Suisse des Chronomètres (Official Swiss Chronometer Control) |
| COSC➣Charter Oak State College |
| COSC➣Chiefs of Staff Committee (Australia) |
| COSC➣Continuity of Services Contract (US Navy) |
| COSC➣City of Oxford Swimming Club (UK) |
| COSC➣Combat Operations Specialist Course |
| COSC➣Cobbles, Silt and Clay (lithological term) |
| COSC➣Cambuslang Out of School Care (UK) |