| Cadmus | | - | Greek Mythology (Latinized) | |
| Callias | | - | Ancient Greek (Latinized) | |
| Calliope | | kə-LIE-ə-pee (English) | Greek Mythology (Latinized) | |
| Callisto (2) | | kə-LIS-to (English) | Greek Mythology (Latinized) | |
| Calypso | | kə-LIP-so (English) | Greek Mythology (Latinized) | |
| Carme (2) | | - | Greek Mythology (Latinized) | |
| Cassander | | - | Ancient Greek (Latinized) | |
| Cassandra | | kə-SAN-drə (English), kə-SAHN-drə (English), kahs-SAHN-drah (Italian) | English, Spanish, Portuguese, Italian, French, German, Greek Mythology (Latinized) | |
| Cassiopea | | ka-see-ə-PEE-ə (English) | Greek Mythology (Latinized) | |
| 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 | |