| ID | Name | Type |
|---|---|---|
| #16009 | Chrysalis | ? |
| #2527 | Cht666cht | ? |
| #18636 | Chuan-Tze Teo | + |
| #18671 | Chuck Benton | + |
| #2528 | Chuck Hopper | + |
| #2529 | Chuck Yeager | - |
| #21831 | Chukasoft Productions | Z |
| #2530 | Church Army | Z |
| #2531 | Church Army Resource Centre | Z |
| #19535 | Church of Scotland Education Software | P |
| #2532 | Church of the Latter Day Speccy | Z |
| #17138 | Chyme Software | M |
| #2533 | Cianfanelli | ? |
| #16100 | Ciaran Brennan | + |
| #2534 | Ciaran Gultnieks | ? |
| #2535 | Cibercomp S.A. | Z |
| #2536 | Ciberne Software | Z |
| #2537 | Cibernesis | Z |
| #2538 | Cibertron Software | Z |
| #2539 | Cinema 84 | Z |