| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Cailin | KAY-lin | English (Rare) | ||
| Cailyn | KAY-lin | English (Modern) | ||
| Cairo | KIE-ro | English (Rare) | ||
| Caitlin | KAHT-leen (Irish), KAYT-lin (English) | Irish, English | ||
| Caitlyn | KAYT-lin | English (Modern) | ||
| 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 | ||
| Caleigh | KAY-lee, KA-lee | English (Modern) | ||
| Calista | kə-LIS-tə (English), kah-LEE-stah (Spanish) | English, Portuguese, Spanish | ||
| Calla | KAL-ə | English | ||
| Callahan | KAL-ə-han | English | ||
| Calleigh | KAL-ee | English (Rare) |