Companies
- Cliffhanger Productions
- Climax Group
- Climax Studios
- Cloud Imperium Games
- Cloudgine
- Clover Studio
- Club Penguin
- Coatsink Software
- CocoaChina
- Coconut Lizard
- Code Charm
- Code Coven
- Codeglue
- Codemasters
- Codemasters Birmingham
- Codemasters Guildford
- Codeworks
- Codigames
- Coexist Gaming
- Coffee Stain North
- Coffee Stain Publishing
- Coffee Stain Studios
- Cognosphere
- Cohort Studios Ltd
- Cold Symmetry