| Catori | Woman | Native American - Hopi Names |
| Catrin | Woman | Welsh Names |
| Catriona | Woman | Scottish Names |
| Causer | Unisex | English Names |
| Cavalier | Man | French Names |
| Cavalli | Unisex | Italian Names |
| Cavan | Man | Irish Names |
| Cavillace | Woman | Incan Names |
| Cawny | Woman | American Names |
| Cayden | Unisex | American Names |
| Cayenne | Woman | French Names |
| Cayla | Woman | Hebrew Names |
| Cayleen | Woman | Irish Names |
| Caylin | Woman | American Names |
| Cayman | Man | Spanish Names |
| Ceallach | Man | Irish Names |
| Ceana | Woman | American Names |
| Ceanna | Woman | English Names |
| Ceara | Woman | Irish Names |
| Cece | Woman | Latin Names |