| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Caetlin | KAYT-lin | English (Rare) | ||
| Caiden | KAY-dən | English (Modern) | ||
| Caileigh | KAY-lee | English (Rare) | ||
| Cailin | KAY-lin | English (Rare) | ||
| Cailyn | KAY-lin | English (Modern) | ||
| Cairo | KIE-ro | English (Rare) | ||
| Caiside | - | Ancient Irish | ||
| Caitlin | KAHT-leen (Irish), KAYT-lin (English) | Irish, English | ||
| Caitlyn | KAYT-lin | English (Modern) | ||
| Caius | - | Ancient Roman | ||
| Cal | KAL | English | ||
| Calanthe | kə-LAN-thee | English (Rare) | ||
| Calanthia | kə-LAN-thee-ə | English (Rare) | ||
| Cale | KAYL | English | ||
| Caleb | KAY-ləb (English) | English, Biblical |