CMS
- C.M.S. Ladies' College, Colombo
- CM (disambiguation)
- CMS Cameron McKenna Nabarro Olswang
- CMS College Kottayam
- CMS Energy
- CMS Enhancements
- CMS-2
- CMSS (disambiguation)
- Cable management
- Calcutta Mathematical Society
- Calexico Mission School
- Call management
- Canadian Mathematical Society
- Cardigan Mountain School
- Carpentersville Middle School
- Caruso Middle School
- Cedar Middle School
- Centennial Middle School
- Centers for Medicare and Medicaid Services
- Central Monitoring System
- Central monitoring station
- Centre for Mathematical Sciences (Cambridge)
- Centre for Mathematical Sciences (Kerala)
- Centre for Mathematical Sciences (disambiguation)
- Certified Master Safecracker
- Changeable-message sign
- Charlotte Motor Speedway
- Charlotte-Mecklenburg Schools
- Chicago Medical School
- Chickahominy Middle School
- Chief master sergeant
- China Manned Space Program
- China Marine Surveillance
- Chinese Mathematical Society
- Chronic mountain sickness
- Church Mission School
- Church Mission Society
- Church Mission Society High School
- City Montessori School
- Claremont McKenna College
- Claremont-Mudd-Scripps Stags and Athenas
- Clarksville Middle School
- Cms (angel)
- Code Morphing Software
- Colina Middle School
- Collateral management
- Collections management (museum)
- Colonia Middle School
- Color management system
- Colorado Medical Society
- Colorado Memory Systems
- Community Middle School
- Compact Muon Solenoid
- Concurrent mark sweep collector
- Configuration management database
- Congenital myasthenic syndrome
- Conservation management system
- Constant maturity swap
- Construction and management simulation
- Contact management system
- Content management system
- Convention on Migratory Species
- Conversational Monitor System
- Council for the Mathematical Sciences
- Course management system
- Court of Master Sommeliers
- Creekwood Middle School
- Crestview Middle School
- Critical management studies
- Cryptographic Message Syntax
- Cubic metre per second
- Cyprus Mathematical Society
- Cytoplasmic male sterility
- Harvey Mudd College
- Illinois Department of Central Management Services
- Scripps College
- Stoping
- Strata title
- The Chicago Manual of Style
- Underground mining (hard rock)
- Wildwood Crest School District