| Chyna | Woman | English Names |
| Chyron | Unisex | English Names |
| Cicely | Woman | English Names |
| Cicily | Woman | English Names |
| Cinderella | Woman | English Names |
| Cissy | Woman | English Names |
| Clapton | Unisex | English Names |
| Clarabelle | Woman | English Names |
| Clare | Woman | English Names |
| Clarence | Man | English Names |
| Claret | Woman | English Names |
| Claribel | Woman | English Names |
| Clarice | Woman | English Names |
| Clarinda | Woman | English Names |
| Clark | Man | English Names |
| Clarke | Man | English Names |
| Clay | Man | English Names |
| Clayland | Man | English Names |
| Clayne | Unisex | English Names |
| Clayton | Man | English Names |