| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Caelia | - | Ancient Roman | ||
| Caelie | KAY-lee | English (Rare) | ||
| Caelina | - | Ancient Roman | ||
| Caelinus | - | Ancient Roman | ||
| Caelius | - | Ancient Roman | ||
| Caesar | SEE-zər (English) | Ancient Roman | ||
| 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) |