| Abbreviation | Definition |
|---|---|
| C/AB | Cadet Airman Basic |
| C/AMN | Cadet Airman |
| C/C | Cast off and Clear |
| C/ELCMC | Communications/ Electronics Life Cycle Management Command |
| C/EO | Communications/ Electronics Officer |
| C/N | Counternarcotics |
| C/S | Chief of Staff |
| C/SCSC | Cost/Schedule Control Systems Criteria |
| C/V | Chaparral/Vulcan |
| C0 | CSSCS Workstation class computer |
| C1 | Command |
| C-130 | Cargo aircraft model 130 (Hercules) |
| C-141 | Cargo aircraft model 141 (Starlifter) |
| C-17 | Cargo aicraft model 17 (Globemaster III) |
| C2 | Class C2 (from DOD 5200-28-STD) |
| C2 | Command and Control |
| C2/SA | Command and Control/Situational Awareness |
| C-21 | Cargo aircraft model 21 (Learjet) |
| C2-2000 | Command and Control in the year 2000 |
| C-27 | Cargo aircraft model 27 (Spartan) |