| Celestine | Unisex | Latin Names |
| Celia | Woman | Latin Names |
| Celina | Woman | Latin Names |
| Celsa | Woman | Latin Names |
| Ceteria | Woman | Latin Names |
| Chalice | Unisex | Latin Names |
| Chevron | Unisex | Latin Names |
| Cicero | Man | Latin Names |
| Cilicia | Woman | Latin Names |
| Circa | Unisex | Latin Names |
| Clara | Woman | Latin Names |
| Clarissa | Woman | Latin Names |
| Claude | Man | Latin Names |
| Claudia | Woman | Latin Names |
| Claudio | Man | Latin Names |
| Claudius | Man | Latin Names |
| Clemens | Man | Latin Names |
| Clodia | Woman | Latin Names |
| Columbia | Woman | Latin Names |
| Columbus | Man | Latin Names |