| Credence | Unisex | English Names |
| Cree | Unisex | Native American Names |
| Creed | Man | American Names |
| Creighton | Man | English Names |
| Creola | Unisex | American Names |
| Crescent | Unisex | English Names |
| Crescentia | Woman | German Names |
| Cress | Unisex | French Names |
| Cressida | Woman | English Names |
| Crete | Woman | Latin Names |
| Creusa | Woman | Greek Names |
| Crevan | Man | Irish Names |
| Crew | Man | English Names |
| Cricket | Unisex | American Names |
| Crimson | Unisex | English Names |
| Crisanta | Woman | Spanish Names |
| Crisanto | Man | Spanish Names |
| Crispin | Man | Latin Names |
| Crispina | Woman | Spanish Names |
| Crispus | Man | Latin Names |