| Cira | Woman | Italian Names |
| Ciro | Man | Italian Names |
| Cirocco | Man | Italian Names |
| Coda | Unisex | Italian Names |
| Columbo | Man | Italian Names |
| Concetta | Woman | Italian Names |
| Consolata | Woman | Italian Names |
| Constantino | Man | Italian Names |
| Contessa | Woman | Italian Names |
| Corsa | Woman | Italian Names |
| Cosima | Woman | Italian Names |
| Cosimo | Man | Italian Names |
| Cosma | Woman | Italian Names |
| Cynzia | Woman | Italian Names |