| Name | Meaning | Gender | Origin |
|---|
| Cimarron | | Female | Hebrew |
| Cinnabar | | Female | Hebrew |
| Cinnamon | | Female | Hebrew |
| Citrine | | Unisex | Hebrew |
| 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 |
| Clover | Clover
| Female | |
| Clyde | Nature name | Male | Scottish |
| Colin | Strong and virile; victorious army; youth, child, victor | Male | English |
| Condor | | Unisex | Hebrew |
| Constantine | steadfast | Male | Latin |
| Coral | Greek for small stone. Sincere or from the sea. Marine animal whose skeletons form coral reefs. | Female | Nature |
| Coriander | | Unisex | |
| Cosmo | Order, universe.
| Male | Italian |
| Courtney | from the court | Female | |
| 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 |
| Crystal | Variant of Christiana. Follower of Christ.
| Female | |