| Acronym | Definition |
|---|
| COSR➣Card of Safe Return (Yu-Gi-Oh! card) |
| COSR➣Cost of Service Ratio (statistic) |
| COSR➣Combat and Operational Stress Reactions (US DoD) |
| COSR➣Contracted-out Salary Related |
| COSR➣Circular Overpile Stacker Reclaimer (construction) |
| COSR➣Conventional Ordnance Safety Review |
| COSR➣Continued Operations Safety Report (UK nuclear industry) |
| COSR➣Center for Optical Signature Recognition |
| COSR➣Continuity of Operations - Secure Recovery |
| COSR➣Continued Operational Safety Case |
| COSR➣Commanding Officer's Stateroom |