| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Corona | - | Late Roman, Italian, Spanish | ||
| Crescencia | - | Spanish | ||
| CristÓBal | kree-STO-bahl | Spanish | ||
| CristiÁN | kree-STYAHN | Spanish | ||
| Cristina | kree-STEE-nah (Italian, Spanish) | Italian, Spanish, Portuguese, Romanian | ||
| Cruz | KROOTH (Spanish), KROOS (Latin American Spanish), KROOSH (Portuguese) | Spanish, Portuguese | ||
| Cruzita | kroo-THEE-tah (Spanish), kroo-SEE-tah (Latin American Spanish) | Spanish | ||
| Curro | - | Spanish | ||
| Custodia | - | Spanish | ||
| Custodio | - | Spanish |