| Codelta | Developer | |
| Codemasters | DeveloperPublisher | |
| Codemasters & Majesco Entertainment | Publisher | |
| Codemasters Birmingham | Developer | |
| Codemasters Online Gaming | Publisher | |
| Codemasters Southam | Developer | |
| Codemasters Studios Guildford | Developer | |
| CodemastersEU | Publisher | |
| CodemastersNA,PAL | Publisher | |
| CodemastersPAL | Publisher | |
| Codename_351 | Developer | |
| Coder100 | Developer | |
| CoderCameron | Developer | |
| CoderChild | DeveloperPublisher | |
| CoderJoe | Developer | |
| Coderman64 | Developer | |
| Coderz | Developer | |
| Codesity | Developer | |
| Codesmiths | Developer | |
| Codev | Developer | |
| Codex Creations | Developer | |
| Codex Worlds | DeveloperPublisher | |
| Codexier | Developer | |
| Codexing | Developer | |
| Codey | Developer | |
| CodeyHuntting | Developer | |
| Coding Cafe | Developer | |
| Coding Geronimo | Developer | |
| Coding Kodiak | Developer | |
| CodingArtists | Developer | |
| CodingLord | Developer | |
| CodingNinjaJoas | Developer | |
| Codo Technologies | Developer | |
| Cody Larkin | Developer | |
| Cody Loyd | Developer | |
| Cody Mace | Developer | |
| Cody Miner | Developer | |
| Cody Ward | Developer | |
| Cody9523 | Developer | |
| CodySelman | Developer | |
| Coelepinda | Developer | |
| Coeur de lion | Developer | |
| Coexito | Developer | |
| CoffeaBeans | Developer | |
| Coffee Bat | Developer | |
| Coffee Bunny Games | Developer | |
| Coffee Interactive | Developer | |
| Coffee Monster | Developer | |
| Coffee Stain Publishing | Publisher | |
| Coffee Stain Studios | DeveloperPublisher | |
| CoffeeCatRailway | Developer | |
| Cogg Games | DeveloperPublisher | |
| CogitareComputing | Developer | |
| Cognetics Corporation | Developer | |
| CogniToy | DeveloperPublisher | |
| Cognitive Forge | Developer | |
| Cognito Software | DeveloperPublisher | |
| CogsAndSpanners | Developer | |
| CoherentNonsense | Developer | |
| Cohort Studios | Developer | |
| Coilworks | Developer | |
| Coinhunter | Developer | |
| Cojkan | Developer | |
| CokeM Interactive | DeveloperPublisher | |
| Coktel | Publisher | |
| Coktel Studio | Developer | |
| Coktel Vision | DeveloperPublisher | |
| Colaboratory | Developer | |
| Colan | Developer | |
| Colanderp | Developer | |
| Colbert A Vision | Developer | |
| Cold Beam Games | Developer | |
| Cold Breath | Developer | |
| Cold Coffee Studio | Developer | |
| ColdStone | Developer | |
| ColdWood Interactive | Developer | |
| Coldwild Games | Developer | |
| Coldwind Games | DeveloperPublisher | |
| Coldwood Interactive | Developer | |
| Cole | Developer | |
| Cole Beernaerts | Developer | |
| Cole Chittim | Developer | |
| Cole Dunham | Developer | |
| Cole Sea | Developer | |
| ColePowered | Developer | |
| Coleco | Publisher | |
| Colectivo Arume | Developer | |
| Coledash | Developer | |
| Colefreezer | Developer | |
| Coleo_Kin | Developer | |
| Colerion Studio | Developer | |
| Colestia | Developer | |
| ColettePgm | Developer | |
| Coley | Developer | |
| ColibriStudio | Developer | |
| Colin | Developer | |
| Colin Amos | Developer | |
| Colin Armistead | Developer | |
| Colin Bellino | Developer | |
| Colin Bestford | Developer | |
| Colin Dooley | Developer | |
| Colin EUMP | Developer | |
| Colin Grunes | Developer | |
| Colin Jones | Developer | |
| Colin Jordan | Developer | |
| Colin Lane | Developer | |
| Colin Lane Games | Developer | |
| Colin Liddle | Developer | |
| Colin Mitchell | Developer | |
| Colin Saunders | Developer | |
| Colin Swinbourne | Developer | |
| Colin Watterson | Developer | |
| ColinCW | Developer | |
| ColinChar | Developer | |
| Colisan | Developer | |
| Collage Games | Developer | |
| Collavier | Developer | |
| Collavier Corporation | DeveloperPublisher | |
| CollectorVision | Publisher | |
| Colleen Craige | Developer | |
| CollegeHumor | Publisher | |
| Collin Lyons | Developer | |
| Collision 2D | Developer | |
| Collision Studios | Developer | |
| Colonel Sandwich | Developer | |
| ColonelLazuli | Developer | |
| Colonthree Enterprises | Developer | |
| Colopl | DeveloperPublisher | |
| Color Dreams | Developer | |
| Color Spray Games | Developer | |
| ColorPepper | Developer | |
| ColorPhoenix | Developer | |
| Colorado Computer Creations | Developer | |
| Colorado Software Associates | Publisher | |
| Colorics | Developer | |
| Colorspace Studio | DeveloperPublisher | |
| Colossai Studios | Developer | |
| Colossal Order | Developer | |
| Colossal Pictures | DeveloperPublisher | |
| ColossalWreck | Developer | |
| Colossil | Developer | |
| Colpax | Publisher | |
| Columbia Data Products | DeveloperPublisher | |
| Columbia Music Entertainment | DeveloperPublisher | |
| ComTec (Keith Jackson, Mark Fisher, Paul Laidlaw, Damon Redmond, John Cassells) | Developer | |
| Comad | DeveloperPublisher | |
| Combo Bits Studios | Developer | |
| Combo Studios | Developer | |
| ComboSmooth | Developer | |
| Combokarel | Developer | |