| CBMcomicsYT | Developer | |
| CBS Electronics | Publisher | |
| CBS Software | Publisher | |
| CB_Games | Developer | |
| CBarilla | Developer | |
| CCC Large Team | Developer | |
| CCJ | Developer | |
| CCP Games | DeveloperPublisher | |
| CCR International | DeveloperPublisher | |
| CC_ARTS | Developer | |
| CCheukKa | Developer | |
| CD Bros. | DeveloperPublisher | |
| CD Brothers | Publisher | |
| CD Projekt | DeveloperPublisher | |
| CD Projekt Red | DeveloperPublisher | |
| CD Utopia | Publisher | |
| CDBroderick | Developer | |
| CDC Games USA | Publisher | |
| CDS Micro Systems | Publisher | |
| CDS Microsystems | Publisher | |
| CDS Software | DeveloperPublisher | |
| CDV | Publisher | |
| CDV Software | Publisher | |
| CDV Software Entertainment | Publisher | |
| CE Software | Publisher | |
| CE-Asia | Publisher | |
| CEFF1994 | Developer | |
| CEG.exe | Developer | |
| CELLNAVI | DeveloperPublisher | |
| CFK | DeveloperPublisher | |
| CGBM | Developer | |
| CGCookie | Developer | |
| CGN Studios | Developer | |
| CGS STUDIO | Developer | |
| CHAMProgramming | Developer | |
| CHAOKO | Developer | |
| CHCH | Developer | |
| CHILL & PLAY | Developer | |
| CHIMPS | Developer | |
| CHIPFOREST | Developer | |
| CHKB | Developer | |
| CHRISdbhr | Developer | |
| CHRONOMATOPOEIA | Developer | |
| CHUBBY gatito | Developer | |
| CHz | Developer | |
| CI Games | DeveloperPublisher | |
| CICCS | Developer | |
| CIJ | Developer | |
| CIrvin | Developer | |
| CJ Axisa | Developer | |