CM
- .cm
- Apollo command module
- C minor
- CM (commerce)
- CM (school)
- CM Airlines
- CM Draconis
- CM postcode area
- CMS (disambiguation)
- Cameroon
- Canadian Imperial Bank of Commerce
- Candidate Master
- Carboxymethyl group
- Centimetre
- Centimorgan
- Central midfielder
- Centromedian nucleus
- Chaconia Medal
- Championship Manager
- Change management
- Chemins de fer du Morbihan
- Chessmaster
- Chiang Mai
- Chiari malformation
- Chief Mate
- Chief Minister
- Chylomicron
- Clare Militia
- Classical music
- Cm (space group)
- Commercial Message
- Common metre
- Condition monitoring
- Configuration management
- Congregation of the Mission
- Connection Machine
- Construction management
- Construction mechanic (United States Navy)
- Construction morphology
- Content management
- Contingency management
- Contract manufacturer
- Contribution margin
- Cooler Master
- Copa Airlines
- Correio da Manhã (Portugal)
- Coulomb-metre
- Curium
- CyanogenMod
- Cypro-Minoan syllabary
- Irish Militia
- Knight Commander Royal Order of Monisaraphon
- List of mine warfare vessels of the United States Navy
- Midwife
- Northern Mariana Islands
- Order of Canada
- Roman numerals