| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| 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 | ||
| Ceara | - | English (Rare) | ||
| Cearbhall | - | Irish | ||
| Cearra | - | English (Rare) | ||
| CebraİL | - | Turkish | ||
| CebriÁN | se-BRYAHN, the-BRYAHN | Spanish | ||
| CecÍLia | - | Portuguese, Slovak, Hungarian |