| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Caiaphas | KAY-ə-fəs (English), KIE-ə-fəs (English) | Biblical | ||
| Caietanus | - | Late Roman | ||
| Caileigh | KAY-lee | English (Rare) | ||
| Cailin | KAY-lin | English (Rare) | ||
| Cain | KAYN (English) | Biblical, Biblical Latin | ||
| Cainan | KAY-nən (English), kay-IE-nən (English) | Biblical, Biblical Latin | ||
| Caio | - | Portuguese (Brazilian) | ||
| Cairo | KIE-ro | English (Rare) | ||
| Caiside | - | Ancient Irish | ||
| Caius | - | Ancient Roman | ||
| Caj | - | Swedish, Norwegian, Danish | ||
| Caja | - | Danish | ||
| Calanthe | kə-LAN-thee | English (Rare) | ||
| Calanthia | kə-LAN-thee-ə | English (Rare) | ||
| Caleb | KAY-ləb (English) | English, Biblical |