| Comcept | Developer | |
| Comedy Central | Publisher | |
| Comedy Reflux | Developer | |
| CometFall | Developer | |
| Comfort | DeveloperPublisher | |
| ComfortSoft | Publisher | |
| Comfy Council Studios | Developer | |
| ComfyCompany | Developer | |
| ComfyGames | Developer | |
| Comi | Developer | |
| Comix | Developer | |
| Comix (Jose Vicente Pons) | Developer | |
| Comix (Jose Vicente Pons, Jose Queral) | Developer | |
| Comix Productions | Publisher | |
| CommanderCookie | Developer | |
| CommanderHux | Developer | |
| Commodore International | Publisher | |
| Commodore Shawn | Developer | |
| Commodore Spain | Developer | |
| Common Colors | Developer | |
| Commonseed | DeveloperPublisher | |
| Commotion Interactive | Developer | |
| Commseed | DeveloperPublisher | |
| Communication Group Plum | DeveloperPublisher | |
| Comodoro | Developer | |
| Comolink Inc. | Developer | |
| Comp-3 Interactive | Developer | |
| Compac | DeveloperPublisher | |
| Compac Inc. | DeveloperPublisher | |
| Company of Kasalo | Developer | |
| CompanyNotFound | Developer | |
| Compedia Software & Hardware | DeveloperPublisher | |
| Compile | DeveloperPublisher | |
| Compile Heart | DeveloperPublisher | |
| Compiled Games | Developer | |
| Compjoetania | DeveloperPublisher | |
| Composerkiwi | Developer | |
| Compro Games | Developer | |
| Compro Games Ltd. | Developer | |
| Comptiq | DeveloperPublisher | |
| Compton's New Media | DeveloperPublisher | |
| Comptuq | Publisher | |
| Compu-Teach | DeveloperPublisher | |
| CompuGames Software | DeveloperPublisher | |
| Compuclassics Corporation | Publisher | |
| Compulsion Games | DeveloperPublisher | |
| Compulsivo | Developer | |
| Computasolve | Publisher | |
| Computel | Developer | |
| Computer & Entertainment Inc. | Developer | |