| Casper | Man | German Names |
| Childeric | Man | German Names |
| Clarimonde | Woman | German Names |
| Claus | Man | German Names |
| Cline | Unisex | German Names |
| Clotilda | Woman | German Names |
| Clove | Unisex | German Names |
| Coen | Man | German Names |
| Cord | Man | German Names |
| Crescentia | Woman | German Names |
| Cunigunde | Woman | German Names |
| Dale | Unisex | German Names |
| Deiter | Man | German Names |
| Dewitt | Man | German Names |
| Didrika | Woman | German Names |
| Diedrick | Man | German Names |
| Diele | Unisex | German Names |
| Dierk | Man | German Names |
| Diesel | Man | German Names |
| Dieter | Man | German Names |