| C&M | Caravan and Motorhome 
| Others |
| C&M | Care and Maintenance
| Others |
| C&M | Carros e Motores
| Others |
| C&M | Control and Management
| Others |
| C&M | Control and Monitoring
| Others |
| C/M | Cycles per Minute
| Others |
| Cm | C-minor
| Others |
| CM | Cable Modem
| Others |
| CM | Caccia Marittima
| Others |
| CM | Cache Manager
| Others |
| CM | Call Me
| Others |
| CM | Call Money
| Others |
| CM | Calm Mind
| Others |
| CM | Calvinistic Methodist
| Others |
| CM | Cambridge Thermionics
| Others |
| CM | Camera Amazon
| Others |
| CM | Camera Man
| Others |
| CM | Camera Mouse
| Others |
| CM | Canyon Medical
| Others |
| CM | Capability Maturity
| Others |
| CM | Cape May, New Jersey
| Others |
| CM | Captain's Mast
| Others |
| CM | Carbonply Maple
| Others |
| CM | CarboxyMetylated
| Others |
| CM | Cardiac Murmur
| Others |
| CM | Cardiac Muscle
| Others |
| CM | Cardiac Myocyte
| Others |
| CM | Cardiac Myxoma
| Others |
| CM | cardiomegaly
| Others |
| CM | cardiomyopathy
| Others |
| CM | Care Management
| Others |
| CM | Cargo Management
| Others |
| CM | carpometacarpal
| Others |
| CM | Carved Maple
| Others |
| CM | Case Management
| Others |
| CM | Case Manager
| Others |
| CM | Case Marker
| Others |
| CM | Cassette Module
| Others |
| CM | Cast Member
| Others |
| CM | Cavernous Malformation
| Others |
| CM | Cell Membrane
| Others |
| CM | Cementitious Materials
| Others |
| CM | Center of Mass
| Others |
| cm | Centimeter
| Others |
| CM | centimetre
| Others |
| cm | Centimetres
| Others |
| CM | Centimetri
| Others |
| cM | Centimorgan
| Others |
| CM | Central Meridian
| Others |
| CM | Central Michigan
| Others |
| CM | Central Midfielder
| Others |
| CM | Central Montana Rail
| Others |
| CM | Central Montana Rail Incorporated
| Others |
| CM | Centre of Mass
| Others |
| CM | Centro Maya
| Others |
| CM | Ceramic Modified
| Others |
| CM | Cerebral Metastases
| Others |
| CM | Certificate of Merit
| Others |
| CM | Certification Mark
| Others |
| CM | Certified Manager
| Others |
| CM | Certified Midwife
| Others |
| CM | Cervical Mucus
| Others |
| CM | Cervical Myelopathy
| Others |
| CM | Chairman's Memorandum
| Others |
| CM | Championship Manager
| Others |
| CM | Change Management
| Others |
| CM | Change Master
| Others |
| CM | Changes Made
| Others |
| CM | Chaos Mage
| Others |
| CM | Chaos Magic
| Others |
| CM | Character Mode
| Others |
| CM | Charge Master
| Others |
| CM | Charles Mack
| Others |
| CM | Charles Miguel
| Others |
| CM | Charlie Munger
| Others |
| CM | Chat Maniac
| Others |
| CM | Chat Monitor
| Others |
| CM | Check Mail
| Others |
| CM | Chemistry and Manufacturing
| Others |
| CM | Chicago made
| Others |
| CM | Chick Magnet
| Others |
| CM | Chicken Manchurian
| Others |
| CM | Chicken Mutton
| Others |
| CM | Chief Metalsmith
| Others |
| CM | Chief Minister
| Designation / Rank, Government, Politics |
| CM | Chill Master
| Others |
| CM | Chinese medicine
| Others |
| CM | Chinth Madhu
| Others |
| CM | Chlorinated Polyethylene Rubber
| Others |
| CM | Chosen Multiplier
| Others |
| CM | Chris Miller
| Others |
| CM | Christian Missionary
| Others |
| CM | Christian Music
| Others |
| CM | Chronic Meningitis
| Others |
| CM | Chronic Migraine
| Others |
| CM | Chuck Mosely
| Others |
| CM | chylomicron
| Others |
| CM | Cielo Maya
| Others |
| CM | Ciku Malaysia
| Others |
| CM | Circolare Ministeriale
| Others |
| CM | Circular Mils
| Others |
| CM | Cisterna Magna
| Others |
| CM | Clam Man
| Others |
| CM | Class Mastery
| Others |
| CM | Clear Message
| Others |
| CM | Clinical Management
| Others |
| CM | Clinical Medicine
| Others |
| CM | Clinical Modification
| Others |
| CM | Clipper Marine
| Others |
| CM | Close Management
| Others |
| CM | Cloudera Manager
| Others |
| CM | Club Med
| Others |
| CM | Codebook Mapping
| Others |
| CM | Coffee Maker
| Others |
| CM | Colectia liceului Medias
| Others |
| CM | Collection Management
| Others |
| CM | Collection Manager
| Others |
| CM | Colonial Marines
| Others |
| CM | Colored Male
| Others |
| CM | Combat Magic
| Others |
| CM | Combined Modality
| Others |
| CM | Combined Model
| Others |
| CM | Command Module (Apollo)
| Others |
| CM | Commander's Manual
| Others |
| CM | Commercial Message
| Others |
| CM | Commie Measurement
| Others |
| CM | Committee Meeting
| Others |
| CM | Common Man
| Others |
| CM | Common Migraine
| Others |
| CM | Common Mode
| Others |
| CM | Common Module
| Others |
| CM | Communication Management
| Others |
| CM | Communications Manager
| Others |
| CM | Community Manager
| Others |
| CM | Community Midwife
| Others |
| CM | Competition Master
| Others |
| CM | Compilation Manager
| Others |
| CM | Complementary Medicine
| Others |
| CM | Complete Moron
| Others |
| CM | Completion Message
| Others |
| CM | Complex Multiplication
| Others |
| CM | Compound Management
| Others |
| CM | Compounding Method
| Others |
| CM | Compression Mold
| Others |
| CM | Compression Molded
| Others |
| CM | Computer Modeled
| Others |
| CM | Con Man
| Others |
| CM | Concept Monitor
| Others |
| CM | Conceptual Model
| Others |
| CM | Condescension Man
| Others |
| CM | Condition Monitored (Monitoring)
| Others |
| CM | Conditioned Media
| Others |
| CM | Confidence Measure
| Others |
| CM | Confidence Measurement
| Others |
| CM | Configurable Monitor
| Others |
| CM | Confocal Microscopy
| Others |
| CM | Congenital Malformation
| Others |
| CM | Congenital Myopathy
| Others |
| CM | Congregation of the Mission
| Others |
| CM | Connection Machine
| Others |
| CM | Connection Management
| Others |
| CM | Connection Manager
| Others |
| CM | Consequence Management
| Others |
| CM | Construction Management
| Others |
| CM | Construction Manager
| Others |
| CM | Consumables Management
| Others |
| CM | Contact Management
| Others |
| CM | Contact Manager
| Others |
| CM | Container Managed
| Others |
| CM | Content Management
| Others |
| CM | Content Model
| Others |
| CM | Contextual Media
| Others |
| CM | Contextual Menus
| Others |
| CM | Continuing Medical
| Others |
| CM | Continuous Memory
| Others |
| CM | Continuous Murmur
| Others |
| CM | Contoured and Molded
| Others |
| CM | Contract Manufacturing
| Others |
| CM | Contrast Medium
| Others |
| CM | Contribution Margin
| Others |
| CM | Control Medium
| Others |
| CM | Control Modem
| Others |
| CM | Control Monitor
| Others |
| CM | Convenient Measure
| Others |
| CM | Conventional Medicine
| Others |
| CM | Conversation Machine
| Others |
| CM | Converter Module
| Others |
| CM | Cookie Monster
| Others |
| CM | Cool Mom
| Others |
| CM | Cooler Master
| Others |
| CM | Coordination Memo
| Others |
| CM | Copulatory Mechanism
| Others |
| CM | Core Mantle
| Others |
| CM | Corporate Masters
| Others |
| CM | Corrective Measure
| Others |
| CM | Correlated Metal
| Others |
| CM | Corrugated Metal
| Others |
| CM | Costal Margin
| Others |
| CM | Counter-Mobility
| Others |
| CM | CounterMeasures
| Others |
| CM | CounterMine
| Others |
| CM | Country Manager
| Others |
| CM | Country Music
| Others |
| CM | Courcheval Manta
| Others |
| CM | Cours Magistral
| Others |
| CM | Course Module
| Others |
| CM | Courser of Merit
| Others |
| CM | Court Martial
| Others |
| CM | CraftMan Data file
| Others |
| CM | Craksta Mentality
| Others |
| CM | Creative Memories
| Others |
| CM | Credit Memo
| Others |
| CM | Crew Module
| Others |
| CM | Crime Manager
| Others |
| CM | Critical Mass
| Others |
| CM | Cruise Missile
| Others |
| CM | Cruiser Minelayer
| Others |
| CM | Cryptococcal Meningitis
| Others |
| CM | Cryptological Mathematics
| Others |
| CM | Crystal Maze
| Military, Defence, Weapon |
| CM | Cubic Meter
| Others |
| CM | Cult-Member
| Others |
| CM | Culture Medium
| Others |
| CM | Curium
| Element |
| CM | Curly Maple
| Others |
| CM | Current Meter
| Others |
| CM | Customized Microscopy
| Others |
| CM | Cut and Measure
| Others |
| CM | CyanogenMod
| Others |
| CM | CyberMonster
| Others |
| CM | Cybermonsters Most
| Others |
| CM | Cyclical Menses
| Others |
| CM | Cytoplasmic Membrane
| Others |
| Cm | Mean Coverage Factor
| Others |
| CM | SantiMetre
| Others |
| CM | Unix Puzzle 8-bit Bitmap graphics file
| Others |
| cm. | cen timeter
| Others |