| Cadfael | Man | Welsh Names |
| Cadfan | Man | Welsh Names |
| Cadhla | Woman | Irish Names |
| Cadilyn | Woman | American Names |
| Cadmus | Man | Greek Names |
| Cadogan | Man | Welsh Names |
| Cady | Woman | American Names |
| Caedmon | Man | English Names |
| Cáel | Unisex | Irish Names |
| Caelan | Unisex | Irish Names |
| Caelia | Woman | English Names |
| Caelinus | Man | Latin Names |
| Caelius | Man | Latin Names |
| Caelum | Unisex | Latin Names |
| Caelus | Man | Latin Names |
| Caerwyn | Unisex | Welsh Names |
| Caesar | Man | Latin Names |
| Caesarea | Woman | Latin Names |
| Çagatay | Man | Turkish Names |
| Cage | Unisex | English Names |