| Abbreviation | Definition |
|---|---|
| CJMC | Ceasefire Joint Military Committee |
| CJMT | CNMI Joint Military Training |
| CJO | Command Job Officer |
| CJPOTF | Combined Joint Psychological Operations Task Force |
| CJSOTF | Combined Joint Special Operations Task Force |
| CJTF | Coalition Joint Task Force |
| CJTF | Combined Joint Task Force |
| CJTF | Commander, Joint Task Force |
| CJTF-CS | Commander, Joint Task Force - Civil Support |
| CJTF-NCR | Commander, Joint Task Force - National Capital Region |
| CJTG | Combined Joint Task Group |
| C-JWICS | Containerized Joint Worldwide Intelligence Communications System |
| CK | Cake |
| CK | Confirmed Kill |
| CK | Containerized Kitchen |
| CKD | Checked |
| CKG | Checking |
| CKT | Circuit |
| CKY | Camp Kill Yourself |
| CL | Československé Letectvo(Czechoslovak Air Force) |