CMC
- American Culinary Federation
- C-M-C'
- CMC (basketball)
- CMC (company)
- CMC Electronics
- CMC International
- CMC Magnetics
- CMC Markets
- COMSAT mobile communications
- Cable Music Channel
- California Men's Colony
- California Music Channel
- Cambridge Muslim College
- Canadian Meat Council
- Canadian Meteorological Centre
- Canadian Music Centre
- Cannonball Motorcycle Club
- Carboxymethyl cellulose
- Caribbean Media Corporation
- Carnegie Moscow Center
- Carolinas Medical Center
- Carpometacarpal joint
- Catholic Medical Center
- Catholic University of Korea
- Central Management and Control
- Central Military Commission (China)
- Central Military Commission of the Communist Party of Vietnam
- Central Military Commission of the Workers' Party of Korea
- Central Mint
- Ceramic matrix composite
- Cerrejón
- Certificate Management over CMS
- Certified Management Consultant
- Certified mortgage consultant
- Chairman of the NATO Military Committee
- Chandka Medical College
- Charlotte Church
- Chi Mei Corporation
- Chicago Musical College
- Children's Museum of Cleveland
- China Media Capital
- China Motor Corporation
- China National Machinery Import and Export Corporation
- Chittagong Medical College
- Chitwan Medical College
- Chlormadinone caproate
- Christian McCaffrey
- Christian Medical College Ludhiana
- Christian Mennonite Conference
- Chronic mucocutaneous candidiasis
- Cincinnati Museum Center at Union Terminal
- Civic Media Center
- Clackamas Middle College
- Claremont McKenna College
- Cluster Munition Coalition
- Coimbatore Medical College
- Coinmarketcap
- Colombo Municipal Council
- Colorado Mountain Club
- Colorado Mountain College
- Colt's Manufacturing Company
- Comilla Medical College
- Command master chief petty officer
- Commandant of the United States Marine Corps
- Commercial Metals Company
- Common-mode choke
- Community multimedia center
- Compact Model Council
- Computer Music Center
- Computer-mediated communication
- Congregation of the Mother Co-Redemptrix
- Constant mean curvature
- Continental Medical College
- Cooper Motor Corporation
- Copper Mountain College
- Cossacks Motorcycle Club
- Country Music Channel
- Craig Memorial Cup
- Crime and Misconduct Commission
- Critical micelle concentration
- Croatian Music Channel
- Cuban Missile Crisis
- Cultural Ministers Council
- Cutie Mark Crusaders
- Cyprus Mines Corporation
- Disk encryption theory
- Drug development
- Entegris
- Glencore
- Global Environmental Multiscale Model
- Government Medical College, Kozhikode
- List of mine warfare vessels of the United States Navy
- Massachusetts Interscholastic Athletic Association
- Messaging Application Programming Interface
- Monte Carlo algorithm
- Rosedale Network of Churches
- The Opera Song (Brave New World)