| Concordia | Woman | Latin Names |
| Constantine | Man | Latin Names |
| Consus | Man | Latin Names |
| Coriolanus | Man | Latin Names |
| Cornelia | Woman | Latin Names |
| Cornelius | Man | Latin Names |
| Corvus | Man | Latin Names |
| Crete | Woman | Latin Names |
| Crispin | Man | Latin Names |
| Crispus | Man | Latin Names |
| Crystal | Woman | Latin Names |
| Cunobeline | Man | Latin Names |
| Curt | Man | Latin Names |
| Curtis | Man | Latin Names |
| Cyprian | Man | Latin Names |
| Cypriana | Woman | Latin Names |