| Abbreviation | Definition |
|---|---|
| CCTS | Close Combat Training System |
| CCTT | Close Combat Tactical Trainer |
| CCTV | Closed Circuit Television |
| CCU | Cargomaster Computer Unit |
| CCU | Cockpit Control Unit |
| CCU | Common Control Unit |
| CCU | Component Control Unit |
| CCU | Corrective Custody Unit |
| CCW | California Concealed Weapon |
| CCW | Carry Concealed Weapon |
| CCW | Carrying Concealed Weapons |
| CCW | Conceal Carry Weapon |
| CCW | Concealed Carry Weapons |
| CCW | Continuous Carrier Wave |
| CCW | Convention on Conventional Weapons |
| CCW | United Nations Convention on Conventional Weapons of 1980 |
| CCWS | Close Combat Weapon Systems |
| CD | Cable Driver |
| CD | Canadian Decoration |
| CD | Cavalry Division |