| Abbreviation | Definition |
|---|---|
| CLP | Certified Linux Professional |
| CLP | Certified Localization Professional |
| CLP | Certified Lotus Professional |
| CLP | Clinical Laboratory Professional |
| CM | Certified Midwife |
| CMAA | Country Music Awards of Australia |
| CMC | Certified Master Chef |
| CMC | Certified Municipal Clerk |
| CMH | Congressional Medal of Honor |
| CMIP | Certified Manager of Invasive Plants |
| CMM | Commander of the order of Military Merit |
| CMMP | Certified Marketing Management Professional |
| CMOH | Commonwealth Medal of Honor |
| CMOH | Congressional Medal Of Honor |
| CMS | Certified Medical Secretary |
| CNA | Certified Nurse Aide |
| CNAA | Contemporary Northwest Art Awards |
| CNDA | Chicago Neighborhood Development Awards |
| CNHP | Certified Natural Health Professional |
| CNIM | Certified Neuro-Interoperative Monitor |