| Clarabelle | Woman | English Names |
| Claral | Woman | French Names |
| Clare | Woman | English Names |
| Clarence | Man | English Names |
| Claret | Woman | English Names |
| Claribel | Woman | English Names |
| Clarice | Woman | English Names |
| Clarimonde | Woman | German Names |
| Clarinda | Woman | English Names |
| Clarissa | Woman | Latin Names |
| Clarity | Woman | American Names |
| Clark | Man | English Names |
| Clarke | Man | English Names |
| Claude | Man | Latin Names |
| Claudette | Woman | French Names |
| Claudia | Woman | Latin Names |
| Claudine | Woman | French Names |
| Claudio | Man | Latin Names |
| Claudius | Man | Latin Names |
| Claus | Man | German Names |