| Name | Meaning | Gender | Origin |
|---|
| Cinder | | Unisex | Hebrew |
| Cindy | Light | Female | Latin |
| Cinnamon | A spice | Female | Greek |
| Claire | Clear | Female | Latin |
| Clancy | Red | Male | Gaelic |
| Cleo | Of a well known father | Female | Greek |
| Cleopatra | Glory + father | Female | Greek |
| Clifford | Cliff ford | Male | English |
| Clover | Clover | Female | English |
| Clyde | Refers To The Scottish Clyde River. | Male | Gaelic |
| Coco | A Pet Name. | Unisex | French |
| Cocoa | Cocoa Jumbo | Unisex | English |
| Coconut | Edible white flesh of the coconut palm tree. | Unisex | English |
| Codi | A Cushion | Male | English |
| Cody | Descendant of Cuidighthigh | Male | Gaelic |
| Cole | Coal | Male | English |
| Comet | A celestial body | Unisex | English |
| Conan | Little wolf hound | Male | Gaelic |
| Connor | Lover of hounds | Male | Gaelic |
| Cookie | A small flat, crisp cake | Unisex | English |
| Cooper | Barrel maker | Male | English |
| Copper | A reddish brown metal - as in copper penny coins. Also slang for a police officer. | Unisex | English |
| Corky | Variant Of Corey Hill Hollow. | Unisex | English |
| Cosmo | Order | Male | Greek |
| Cotton | Woody hill | Unisex | Welsh |
| Cozmo | | Unisex | Hebrew |
| Crackers | | Unisex | Hebrew |
| Cricket | A leaping insect | Unisex | English |
| Crystal | Crystal | Female | English |
| Cubby | | Unisex | Hebrew |