| Name | Meaning | Gender | Origin |
|---|
| Clay | adhere, mortal | Male | English |
| Clayton | place with good clay | Male | English |
| Cleveland | land near the hill, from the cliffs | Male | English |
| Clifton | place on a cliff | Male | English |
| Clive | Cliff Dweller | Male | English |
| Cloud | | Male | Hebrew |
| Clyde | Nature name | Male | Scottish |
| Colin | Strong and virile; victorious army; youth, child, victor | Male | English |
| Condor | | Unisex | Hebrew |
| Constantine | steadfast | Male | Latin |
| Coriander | | Unisex | |
| Cosmo | Order, universe.
| Male | Italian |
| Covert | | Unisex | Hebrew |
| Crawford | ford where crows gather | Male | English |
| Cromwell | Lives By The Winding Stream | Unisex | English |
| Crosley | after Powell Crosley, the american entrepeneur | Unisex | |
| Crow | | Male | Hebrew |
| Cuba | Island country in the Caribbean. | Male | Place-name |
| Cunningham | From Cunningham | Unisex | Scottish |
| Cyril | lordly, proud | Male | Greek |
| Cyrus | throne | Male | Persian |
| Dag | daylight | Male | Scandinavian |
| Dagwood | shining forest | Male | English |
| Dale | Lives in the valley
| Male | English |
| Dallas | Dwells by the waterfall
| Male | Place-name |