| Abbreviation | Definition |
|---|---|
| CMU | Clear Memory Utility |
| CMV | Combat Mobility Vehicle |
| CMVR | Certified Military Veteran Recruiter |
| CMW | Continuous Microwave |
| CMW | Crystal Magic Weapon |
| CMWC | Canadian Military Wives Choirs |
| CMWG | Civilian Military Working Group |
| CMWG | Configuration Management Working Group |
| CMWS | Common Missile Warning System |
| CMX | Crisis Management Exercise |
| CN | Circuit Net |
| CN | Code Name |
| CN | Combined Nomenclature |
| CN | Command Network |
| CN | Counter-Narcotic |
| CN/CMS | Counter-Narcotics Command Management System |
| CNA | Center for Naval Analysis |
| CNA | Commander's Narrative Analysis |
| CNA | Computer Network Attack |
| CNAC | Customs National Aviation Center |