| ID | Name | Type |
|---|---|---|
| #2328 | Cesar Llata Pena | + |
| #2329 | Cesar Nicolas Gonzalez | + |
| #21278 | Cesare Giavani | + |
| #2330 | Ceska Lipa | ? |
| #22291 | Cesoft | - |
| #2331 | Cezary Dobrzynski | + |
| #2332 | Cezary Wasniewski | + |
| #2334 | Chad Software | Z |
| #17132 | Chadsoft | M |
| #2335 | Chainik Hackers Group | Z |
| #2336 | Chalksoft Ltd | P |
| #2337 | Challenge Research Ltd | Z |
| #2338 | Challenge Software | P |
| #2339 | Chameleon Computer Games | P |
| #2340 | Chameleon Computers Ltd | Z |
| #2341 | Channel 4 Television | Z |
| #2342 | Channel 8 Software | P |
| #2343 | Chaotic Soft | Z |
| #2344 | Chapete | ? |
| #2345 | Chapman and Beckingham Software | Z |