| Cashlin | Woman | English Names |
| Cashmere | Unisex | English Names |
| Caspian | Man | English Names |
| Cassie | Woman | English Names |
| Cat | Woman | English Names |
| Cate | Woman | English Names |
| Cathica | Woman | English Names |
| Catlin | Woman | English Names |
| Catlyn | Woman | English Names |
| Causer | Unisex | English Names |
| Ceanna | Woman | English Names |
| Cecil | Man | English Names |
| Cecily | Woman | English Names |
| Cedric | Man | English Names |
| Cedrica | Woman | English Names |
| Celandine | Woman | English Names |
| Celtic | Man | English Names |
| Cenedra | Woman | English Names |
| Cent | Unisex | English Names |
| Chad | Man | English Names |