| Cristy | Unisex | English Names |
| Crosby | Unisex | English Names |
| Cross | Unisex | English Names |
| Cruella | Woman | English Names |
| Cruise | Unisex | English Names |
| Culture | Unisex | English Names |
| Culver | Man | English Names |
| Currer | Unisex | English Names |
| Cuthbert | Man | English Names |
| Cutler | Man | English Names |
| Cutter | Man | English Names |
| Cwen | Woman | English Names |
| Cyanne | Woman | English Names |
| Cyneburg | Man | English Names |
| Cypress | Unisex | English Names |
| Cyprus | Unisex | English Names |