| Name | Meaning | Favorites |
| Colton | Coal town | |
| Connie | Derived from constance | |
| Cora | Maiden | |
| Coral | Small Stone | |
| Corby | Dark a saraven | |
| Cordelia | Daughter of the sea | |
| Cordell | Rope maker | |
| Corliss | Derived from carlor carlisle | |
| Cort | Bold or short | |
| Courtney | Royal Attendent | |
| Coy | Woods | |
| Coye | Woods | |
| Craig | From the crag, Rocky Hill | |
| Creda | Faith | |
| Crescent | To grow | |
| Cwen | Queen | |
| Cynthia | Moon goddess | |
| Cyril | Lord-like | |
| Dallon | A valley, From dale | |
| Dalton | The town near the valley | |
