| Cornell | Man | English Names |
| Cort | Man | English Names |
| Cosmo | Man | English Names |
| Cotton | Man | English Names |
| Coty | Unisex | English Names |
| Courtland | Man | English Names |
| Courtney | Unisex | English Names |
| Cove | Unisex | English Names |
| Coven | Unisex | English Names |
| Coy | Unisex | English Names |
| Coye | Unisex | English Names |
| Crane | Unisex | English Names |
| Crawford | Man | English Names |
| Creda | Woman | English Names |
| Credence | Unisex | English Names |
| Creighton | Man | English Names |
| Crescent | Unisex | English Names |
| Cressida | Woman | English Names |
| Crew | Man | English Names |
| Crimson | Unisex | English Names |