| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| CÉLia | SE-lyə | Portuguese | ||
| CÉSar | THE-sahr (Spanish), SE-sahr (Latin American Spanish) | French, Spanish, Portuguese | ||
| CÉZar | - | Portuguese (Brazilian) | ||
| CÍNtia | - | Portuguese | ||
| CÔNg | - | Vietnamese | ||
| CÚC | - | Vietnamese | ||
| Caetano | - | Portuguese | ||
| Cahaya | - | Indonesian, Malay | ||
| Cahya | CHAH-yah | Indonesian | ||
| Cahyo | - | Indonesian, Javanese | ||
| Caio | - | Portuguese (Brazilian) | ||
| Calista | kə-LIS-tə (English), kah-LEE-stah (Spanish) | English, Portuguese, Spanish | ||
| Calisto | kah-LEE-sto (Spanish) | Portuguese, Spanish | ||
| Calixta | - | Spanish, Portuguese | ||
| Calixto | - | Spanish, Portuguese |