| Name | Meaning | Gender | Origin |
|---|
| Clyde | Refers To The Scottish Clyde River. | Male | Scottish |
| Clyffton | From The Farm Near The Cliff | Male | English |
| Clyfland | From The Cliff Land | Male | English |
| Clyford | Cliff-Side Ford. | Male | English |
| Clyftun | From The Farm Near The Cliff | Male | English |
| Clymene | Myth Name (Mother Of Atalanta) | Female | Greek |
| Clytemnestra | Myth Name (Murdered Agamemnon) | Female | Greek |
| Clytie | Myth Name (A Water Nymph) | Female | Greek |
| Clyve | Lives At The Cliffs | Male | English |
| Cnidel | Name Of A King | Male | Arthurian |
| Coatl | Snake | Male | Nahuatl |
| Cochlain | Hooded | Male | Irish |
| Codell | Helpful. | Male | English |
| Cofahealh | Lives At The Cave Slope | Male | English |
| Coghlan | Hooded | Male | Irish |
| Coigleach | Distaff | Male | Gaelic |
| Coilin | Virile | Male | Irish |
| Coillcumhann | From The Narrow Forest | Male | Irish |
| Coilleach | Guards The Forest | Male | Gaelic |
| Coinleain | Well-Shaped | Male | Gaelic |
| Coireail | Lordly | Male | Irish |
| Colan | Abbreviation Of Nicholas People's Victory. | Male | English |
| Colbert | Seaman | Male | English |
| Colbey | Dark: Dark-Haired. | Male | French |
| Colbi | | Female | English |
| Colby | From The Black Farm | Male | English |
| Cole | From The Dark Town: Abbreviation Of Nicholas People's Victory. | Male | English |
| Coleen | Girl | Female | Gaelic |
| Coleman | Dark Skinned | Male | English |
| Colemann | Dark Skinned | Male | English |