Companies
- Chunsoft
- CI Games
- Cing
- Cipher Prime Studios
- Circana
- City Interactive
- City State Entertainment
- Clap Hanz
- Cliffhanger Games
- Cliffhanger Productions
- Climax Studios
- ClockStone Software
- Cloud Imperium Games
- Clover Studio
- Cococucumber
- Coda Games
- Codeglue
- Codemasters
- Codemasters Birmingham
- Codemasters Guildford
- Coffee Stain North
- Coffee Stain Publishing
- Coffee Stain Studios
- Cognosphere
- Cogwheel Software
- Coin Crew Games
- Cold Iron Studios
- Cold Symmetry
- Coldwood Interactive
- Colossal Games LTD
- Colossal Order
- Columbia Pictures
- Com2uS
- Comcept
- Communications Workers of America
- Compile Heart
- Compulsion Games
- Conatus Creative
- ConcernedApe
- Conifer Games
- Constantin Film
- Core Design
- Corecell Technology
- Corsair
- Cosmonaut Studios
- Counter Logic Gaming
- Counterplay Games
- Covenant Studios
- Cowen & Company
- Crate Entertainment