| $C | Canadian Dollars 
| Others |
| &c | and so forth [et cetera [Lat.])
| Others |
| &c | et cetera (Latin)
| Others |
| (C) | Copyright
| Others |
| C | 100
| Others |
| C | About; as in circa
| Others |
| C | C language source code file
| Others |
| C | C-Check
| Others |
| C | Cable
| Others |
| C | Caffeine
| Others |
| C | Calculated
| Others |
| C | Calibration
| Others |
| C | Calicivirus
| Others |
| C | Calm (no wind)
| Others |
| C | Calorie
| Others |
| C | Can (buoy)
| Others |
| C | Cancelled
| Others |
| C | Cancer
| Others |
| C | Candela
| Others |
| C | Candle
| Others |
| C | Canine tooth
| Others |
| C | Canoe
| Others |
| C | Cantankerous
| Others |
| C | Canterwood
| Others |
| C | Capacitance
| Others |
| C | Capacitor
| Others |
| C | Capacity
| Others |
| C | Cape
| Others |
| C | Capital
| Others |
| C | Captain
| Others |
| C | Carbon
| Element |
| C | Cardinal
| Others |
| C | Cargo/Transport aircraft
| Others |
| C | Carpenter
| Others |
| C | Carport
| Others |
| C | Carrier
| Others |
| C | Casper
| Others |
| C | Catastrophe
| Others |
| C | Catcher (baseball)
| Others |
| C | Cause
| Others |
| C | Caution
| Others |
| C | Cell
| Others |
| C | Cello
| Others |
| C | Celsius
| Others |
| C | Celtic
| Others |
| C | Center
| Others |
| C | Centigrade
| Others |
| C | Centime
| Others |
| C | Cereal
| Others |
| C | Certified
| Others |
| C | Cervical
| Others |
| C | Chain
| Others |
| C | Chairman
| Others |
| C | Challenger
| Others |
| C | Championship
| Others |
| C | Chanel
| Others |
| C | Chapel
| Others |
| C | Chapter
| Others |
| C | Character
| Others |
| C | Characters
| Others |
| C | Charity
| Others |
| C | Charlotte, North Carolina (mint mark on early United States gold coins)
| Others |
| C | Charmed quark
| Others |
| C | Cheap
| Others |
| C | Cheese
| Others |
| C | Cher
| Others |
| C | Chicken
| Others |
| C | Child
| Others |
| C | children and adolescents
| Others |
| C | Chimpanzee
| Others |
| C | Cholesterol
| Others |
| C | Cholesterolin
| Others |
| C | Christ
| Others |
| C | Christian
| Others |
| C | Christmas
| Others |
| C | Chrysanthemum
| Others |
| C | Chrysler
| Others |
| C | Cilt
| Others |
| C | Cindy
| Others |
| C | circa - about
| Others |
| C | Circle
| Others |
| C | Circular
| Others |
| C | Circumference
| Others |
| C | Cited
| Others |
| C | Citizen
| Others |
| C | Citizens
| Others |
| C | Citrus
| Others |
| C | City
| Others |
| C | Civilization
| Others |
| C | Clarification
| Others |
| C | Class
| Others |
| C | Classic
| Others |
| C | Classification
| Others |
| C | Cleanse
| Others |
| C | Clear
| Others |
| C | Cleveland
| Others |
| C | Cleverness factor
| Others |
| C | Click
| Others |
| C | Climbing
| Others |
| C | Clinical
| Others |
| C | Clock
| Others |
| C | Cloud
| Others |
| C | Club
| Others |
| C | Clueless
| Others |
| C | Coach
| Others |
| C | Coast Guard (military aircraft prefix)
| Others |
| C | Cockroach
| Others |
| C | Cod
| Others |
| C | Code
| Others |
| C | Coefficient
| Others |
| C | cold and clammy
| Others |
| C | Collaboration
| Others |
| C | Collect
| Others |
| C | Collector
| Others |
| C | Colonial
| Others |
| C | Color
| Others |
| C | Colored
| Others |
| C | Colt
| Others |
| C | Colt pistol
| Others |
| C | Columbus
| Others |
| C | Combat
| Others |
| C | Combination
| Others |
| C | Comedy
| Others |
| C | Comma
| Others |
| C | Commandant
| Others |
| C | Commission
| Others |
| C | Commitment
| Others |
| C | Common meter
| Others |
| C | Commons (designating bills introduced in the House of Commons)
| Others |
| C | Communication
| Others |
| C | Communicator
| Others |
| C | Communism
| Others |
| C | Communists
| Others |
| C | Community
| Others |
| C | Compact
| Others |
| C | Compact car
| Others |
| C | Compare
| Others |
| C | Compassion
| Others |
| C | Compensation
| Others |
| C | Competent
| Others |
| C | Compiler
| Others |
| C | Complaining
| Others |
| C | Complete
| Others |
| C | Complex
| Others |
| C | Complexity
| Others |
| C | Composition
| Others |
| C | Compression of earth
| Others |
| C | Compromise
| Others |
| C | Compromise Band
| Others |
| C | Computational
| Others |
| C | Computer
| Others |
| C | Computing
| Others |
| C | Con
| Others |
| C | Concentrate
| Others |
| C | Concepts
| Others |
| C | Concern
| Others |
| C | Concise
| Others |
| C | Conclusion
| Others |
| C | Concourse
| Facility, Transport, Airport, Railways, Railway Station |
| C | Concurrent
| Others |
| C | Condemned
| Others |
| C | Condition
| Others |
| C | Conditions
| Others |
| C | Confession
| Others |
| C | Configuration
| Others |
| C | Connected
| Others |
| C | Connection
| Others |
| C | Connectivity
| Others |
| C | Connector
| Others |
| C | Consequence
| Others |
| C | Conservative (party member)
| Others |
| C | Consistency
| Others |
| C | Consonant
| Others |
| C | Constant
| Others |
| C | Constituent
| Others |
| C | Constitution
| Others |
| C | Constriction
| Others |
| C | Consul
| Others |
| C | Consumption
| Others |
| C | Contemporary
| Others |
| C | Context
| Others |
| C | Contraction
| Others |
| C | Contractions
| Others |
| C | Contralto
| Others |
| C | Contribution
| Others |
| C | Control
| Others |
| C | Controversial
| Others |
| C | Controversy
| Others |
| C | Conventional
| Others |
| C | Convergent
| Others |
| C | Conviction
| Others |
| C | Cook
| Others |
| C | Cookie
| Others |
| C | Coolness
| Others |
| C | Cooperate
| Others |
| C | Coordination
| Others |
| C | Core
| Others |
| C | Coronary
| Others |
| C | Corporate
| Others |
| C | Correctness
| Others |
| C | Corruption
| Others |
| C | Cosmopolitan
| Others |
| C | Cost
| Others |
| C | Costs
| Others |
| C | Cotton
| Others |
| C | Coulomb
| Others |
| C | Counsel
| Others |
| C | counsel and care
| Others |
| C | Count
| Others |
| C | Counted
| Others |
| C | Counter-tenor
| Others |
| C | Coupe
| Others |
| C | Coupon
| Others |
| C | Courage
| Others |
| C | Course angle
| Others |
| C | Cousin
| Others |
| C | Cover
| Others |
| C | Coverage factor
| Others |
| C | Covered
| Others |
| C | Coward
| Others |
| C | Crabby
| Others |
| C | Cranky
| Others |
| C | Create
| Others |
| C | Creative Mode
| Others |
| C | Creativity
| Others |
| C | Creator
| Others |
| C | Credit
| Others |
| C | Creeping line pattern
| Others |
| C | Creepy
| Others |
| C | Critical
| Others |
| C | Cronies
| Others |
| C | Crowned
| Others |
| C | Crushing
| Others |
| C | Cubs
| Others |
| C | Cult
| Others |
| C | Culture
| Others |
| C | cum (Lat.) with
| Others |
| C | Cum (with)
| Others |
| c | Cum - with (usually written with a bar on top of the "c")
| Others |
| C | Cunning
| Others |
| C | Cuptor
| Others |
| C | Cure
| Others |
| C | curette and cautery of skin lesion
| Others |
| C | Curiosity
| Others |
| C | Current
| Others |
| C | Cursed
| Others |
| C | Customer
| Others |
| C | Customer device
| Others |
| C | Cute
| Others |
| C | Cyan
| Others |
| c | Cycle
| Others |
| C | Cyclops
| Others |
| C | Cylinder
| Others |
| C | Cylindrical
| Others |
| C | Cysteine
| Others |
| C | Cytosine
| Others |
| C | form C (break-before-make) contacts
| Others |
| C | One Hundred
| Others |
| C | Roman numeral 100
| Others |
| C | Scoring Grade
| Education |
| C | See
| Others |
| C | Speed of Light
| Others |
| C | The speed of light.
| Others |
| c# | C Sharp Programming Language
| Others |
| C# | C-Sharp
| Others |
| C# | C-sharp programming language
| Others |
| C# | Cohen Number
| Others |
| C+ | Canal Plus ( France)
| Others |
| C++ | C Plus Plus
| Computer Programming, Programming Language |
| C++ | C++ programming language - source code file
| Others |
| C++ | C-plus-1 programming language
| Others |
| C++ | C-Plus-Plus
| Others |
| c. | about, (circa [Lat.])
| Others |
| c. | centi~ (prefix | hundredth part)
| Others |
| c. | Cents
| Others |
| c. | Century, Centuries
| Others |
| C. | Circa
| Others |
| c. | Circa (approximately)
| Others |
| c. | Circa; approximately the year of ....
| Others |
| C. | Comitis (count)
| Others |
| c. | Cup(s)
| Others |