| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| CATINA | - | Romanian | ||
| CATO (1) | - | Ancient Roman | ||
| CATO (2) | - | Dutch | ||
| CATRIN | KAT-rin (Welsh), KAHT-reen (German) | Welsh, German | ||
| CATRINA | - | Irish, Scottish | ||
| CATRINE | - | Swedish | ||
| CATRIONA | ka-TREE-na, ka-TREE-o-na | Irish, Scottish | ||
| CAVAN | - | English | ||
| CAYDEN | KAY-dən | English (Modern) | ||
| CAYETANO | kie-e-TAH-no | Spanish | ||
| CAYLEY | KAY-lee | English (Rare) | ||
| CEADDA | - | Anglo-Saxon | ||
| CEALLACH | KEL-akh | Irish | ||
| CEALLACHÁN | - | Irish | ||
| CEALLAGH | - | Irish |