| Abbreviation | Definition |
|---|---|
| COT | Commissioned Officer Training |
| COT | Computer Operator Terminal |
| COT | Consecutive Overseas Tours |
| COT | Crisis Operations Team |
| COTAP | Coordinator of Tactics and Protocol |
| COTB | Cohen On The Bridge |
| COTC | Canadian Officers Training Corps |
| COTF | Changes On The Fly |
| COTF | Commander, Operational Test and evaluation Force |
| COTHEN | Customs Over-The-Horizon Enforcement Network |
| COTP | Captain Of The Port |
| COTR | Contracting Officer's Technical Representative |
| COTS | Cargo Offload and Transfer System |
| COTS | Commercial-Off-The-Shelf |
| COTS | Container Offloading and Transfer System |
| COU | Cable Orderwire Unit |
| COU | Cable Order-wire Unit |
| COV | Counter Obstacle Vehicle |
| COVCOM | COVert COMmunications |
| CP | Capacity Planning |