| Christoforos | | - | Greek | |
| Christophoros | | - | Late Greek | |
| Chrysanthe | | - | Ancient Greek | |
| Chrysanthi | | - | Greek | |
| Chrysanthos | | - | Greek, Ancient Greek | |
| Chryseis | | - | Greek Mythology | |
| Chryses | | - | Greek Mythology | |
| Chryssa | | - | Greek | |
| Circe | | SUR-see (English) | Greek Mythology (Latinized) | |
| Cleisthenes | | KLIES-thə-neez (English) | Ancient Greek (Latinized) | |
| Cleitus | | - | Ancient Greek (Latinized) | |
| Cleon | | - | Ancient Greek (Latinized) | |
| Cleopatra | | klee-ə-PAT-rə (English) | Ancient Greek (Latinized) | |
| Clio | | KLEE-o (Italian) | Greek Mythology (Latinized), Italian | |
| Clitus | | - | Ancient Greek (Latinized) | |