| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| CÁTia | - | Portuguese | ||
| CÂNdida | - | Portuguese | ||
| CÂNdido | - | Portuguese | ||
| CÉLia | SE-lyə | Portuguese | ||
| CÉSar | THE-sahr (Spanish), SE-sahr (Latin American Spanish) | French, Spanish, Portuguese | ||
| CÉZar | - | Portuguese (Brazilian) | ||
| CÍNtia | - | Portuguese | ||
| Caetano | - | Portuguese | ||
| 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 | ||
| Camila | kah-MEE-lah (Spanish) | Spanish, Portuguese | ||
| Camilo | kah-MEE-lo (Spanish) | Spanish, Portuguese |