| ID | Name | Type |
|---|---|---|
| #17121 | Cap'n Ahab Software | M |
| #2172 | Capcom | Z |
| #2173 | Capcom Co Ltd | Z |
| #17122 | Capital Computer Services | R |
| #2174 | Capodiboccia | ? |
| #17123 | Capri Marketing | A |
| #17124 | Capricorn Software | M |
| #2175 | Capry | ? |
| #2176 | Capry Stall | ? |
| #2177 | Capsoft | Z |
| #21957 | Captain Black | + |
| #2178 | Captain Bob | ? |
| #2179 | Captain Poke | ? |
| #2180 | Cardex | Z |
| #2181 | Cardinal | ? |
| #16692 | Care Electronics | Z |
| #2182 | Caris Software | Z |
| #2183 | Carl Billson | + |
| #2184 | Carl Clayton | + |
| #2185 | Carl Cropley | + |