| Cassiopeia | | ka-see-ə-PEE-ə (English) | Greek Mythology (Latinized) | |
| Castor | | KAS-tər (English) | Greek Mythology (Latinized) | |
| Cephalus | | - | Greek Mythology (Latinized) | |
| Cepheus | | - | Greek Mythology (Latinized) | |
| Cerberus | | SUR-bə-rəs (English) | Greek Mythology (Latinized) | |
| Chaleb | | - | Biblical Latin, Biblical Greek | |
| Chara | | - | Greek | |
| Charalampos | | - | Greek | |
| Chares | | - | Ancient Greek | |
| Charis | | KAR-is (English) | Ancient Greek, English (Rare) | |
| Chariton | | - | Ancient Greek | |
| Charmion | | - | Ancient Greek | |
| Charon | | - | Greek Mythology | |
| Chloe | | KLO-ee (English) | English, Biblical, Biblical Latin, Biblical Greek, Ancient Greek, Greek Mythology | |
| Chloris | | - | Greek Mythology | |