| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Cornelio | kor-NE-lyo | Spanish, Italian | ||
| Corona | - | Late Roman, Italian, Spanish | ||
| Corradino | kor-rah-DEE-no | Italian | ||
| Corrado | kor-RAH-do | Italian | ||
| Cosima | - | Italian | ||
| Cosimo | KAW-zee-maw, KO-zi-mo | Italian | ||
| Cosma | - | Italian | ||
| Costantino | - | Italian | ||
| Costanzo | - | Italian | ||
| Crescenzo | - | Italian | ||
| Cristiana | kree-STYAH-nah (Italian) | Italian, Portuguese | ||
| Cristiano | kree-STYAH-no (Italian), kreesh-TYA-noo (Portuguese) | Italian, Portuguese | ||
| Cristina | kree-STEE-nah (Italian, Spanish) | Italian, Spanish, Portuguese, Romanian | ||
| Cristoforo | - | Italian | ||
| Crocetta | kro-CHET-tah | Italian |