| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| CALLISTO (2) | kə-LIS-to (English) | Greek Mythology (Latinized) | ||
| CALLISTUS | kə-LIS-təs (English) | Late Roman | ||
| CALLIXTUS | - | Late Roman | ||
| CALLUM | KAL-um | Scottish | ||
| CALOGERA | kah-lo-JE-rah | Italian | ||
| CALOGERO | kah-lo-JE-ro | Italian | ||
| CALOGERUS | - | Late Roman | ||
| CALUM | KAL-um | Scottish | ||
| CALVAGH | - | Irish | ||
| Calvert | ['kælvət] | |||
| Calvin | ['kælvin] | |||
| CALVIN | KAL-vin | English | ||
| CALVUS | - | Ancient Roman | ||
| CALYPSO | kə-LIP-so (English) | Greek Mythology (Latinized) | ||
| CAM (1) | - | Vietnamese |