| Acronym | Definition |
|---|
| CMN | Common |
| CMN | Certificate of Medical Necessity |
| CMN | Canadian Museum of Nature |
| CMN | Constructions Mécaniques de Normandie (French: Mechanical Construction of Normandy; shipyard; Cherbourg, France) |
| CMN | Community Mapping Network |
| CMN | Casablanca, Morocco - Mohamed V (Airport Code) |
| CMN | Common Information |
| CMN | Crewman |
| CMN | Cepstral Mean Normalization (algorithm) |
| CMN | Congenital Melanocytic Nevus |
| CMN | Call Me Now |
| CMN | Certificate of Medical Need |
| CMN | Congenital Motor Nystagmus |
| CMN | Cantel Industries, Inc (stock symbol) |
| CMN | Cry More Noob (gaming clan) |
| CMN | Church Media Net |
| CMN | Configuration Management Network |
| CMN | Conflict Management and Negotiation |
| CMN | Conference Mixer Network |
| CMN | Corps Musical Nivellois (Belgium) |
| CMN | Centre Maritime de Nantes (French: Maritime Centre of Nantes; Nantes, France) |
| CMN | Children's Miracle Network (since 1983; Salt Lake City, Utah) |
| CMN | Club du Mâtin de Nâples (French: Neapolitan Mastiff Club) |
| CMN | Culinary Media Network (shows) |
| CMN | Crisis Management Network (various locations) |
| CMN | Centre de Médecine Naturelle de Spa (French: Natural Medicine and Spa Center; Belgium) |
| CMN | Chambre des Métiers et Négoces (French: Chamber of Crafts and Trade; Belgium) |
| CMN | College Media Network |
| CMN | Coalition Military Network (US DoD) |
| CMN | Centre des Monuments Nationaux (French: National Monuments Center) |
| CMN | Creative Muslim Network (UK) |
| CMN | Catalogue des Manuscrits Notés des Bibliothèques Publiques de France (French: Catalogue of Rated Manuscripts of Public Libraries in France) |
| CMN | Charleville Mézières Natation (French swimming club) |
| CMN | Carrières de la Montagne Noire (French: Career of the Black Mountain; est.1956) |