| ID | Name | Type |
|---|---|---|
| #2073 | C.S. Lewis | + |
| #2074 | C.S.D. Co Ltd | Z |
| #2075 | C.Servis Games | Z |
| #2076 | C.T. | ? |
| #2077 | C.W. Engel | + |
| #2078 | C.W. Fawcett | + |
| #2079 | C.W. May | + |
| #18934 | C64CD Studios | P |
| #17108 | CA Micros | S |
| #2081 | CAT | ? |
| #2082 | CBI | ? |
| #2083 | CBM | ? |
| #17109 | CCC (Chic Computer Club) | U |
| #2084 | CCE | ? |
| #21778 | CCL | P |
| #17110 | CCL Software Library | X |
| #2085 | CCP Software | Z |
| #2086 | CCS | Z |
| #2087 | CCS [2] | ? |
| #19239 | CCS [CZ] | - |