| Callias | | - | Ancient Greek (Latinized) | |
| Calliope | | kə-LIE-ə-pee (English) | Greek Mythology (Latinized) | |
| Callista | | kə-LIS-tə | English (Rare) | |
| Callisto (1) | | kahl-LEE-sto | Italian | |
| Callisto (2) | | kə-LIS-to (English) | Greek Mythology (Latinized) | |
| Callistus | | kə-LIS-təs (English) | Late Roman | |
| Callixtus | | - | Late Roman | |
| Calogera | | kah-lo-JE-rah | Italian | |
| Calogero | | kah-lo-JE-ro | Italian | |
| Calogerus | | - | Late Roman | |
| Calvus | | - | Ancient Roman | |
| Calypso | | kə-LIP-so (English) | Greek Mythology (Latinized) | |
| Cam (1) | | - | Vietnamese | |
| Cambria | | KAM-bree-ə (English) | Various | |
| Camelia | | kah-MEL-yah | Romanian | |