| Caliber | Unisex | English Names |
| Calico | Unisex | English Names |
| Calida | Woman | Spanish Names |
| Calidore | Man | English - Literature Names |
| California | Woman | Spanish Names |
| Calissa | Woman | American Names |
| Calista | Woman | Greek Names |
| Caliste | Woman | French Names |
| Calix | Man | Greek Names |
| Calixte | Man | French Names |
| Calixto | Man | Spanish Names |
| Calixtus | Man | Latin - Late Roman Names |
| Calla | Woman | Greek Names |
| Callahan | Man | Irish Names |
| Callan | Unisex | Irish Names |
| Callen | Unisex | Irish Names |
| Callia | Woman | Greek Names |
| Callias | Unisex | Greek Names |
| Callie | Woman | Greek Names |
| Calliope | Woman | Greek Names |