| Name | Meaning | Gender | Origin |
|---|
| Cobweb | | Unisex | Hebrew |
| Coco | A pet name.
| Female | Spanish |
| Coco | A pet name.
| Female | Spanish |
| Coco | A pet name.
| Female | Spanish |
| Cocoa | cocoa Jumbo | Female | Color |
| Coconut | Edible white flesh of the coconut palm tree. | Unisex | |
| Colby Jack | | Unisex | Hebrew |
| Cole | coal, victory of the people | Male | English |
| Colin | Strong and virile; victorious army; youth, child, victor | Male | English |
| Comet | A celestial body | Female | Nature |
| Congo | | Male | Hebrew |
| Conrad | brave counsel | Male | |
| Contessa | | Unisex | Hebrew |
| Cookie | A small flat, crisp cake | Female | |
| Cooper | Barrel maker | Male | English |
| Copper | A reddish brown metal - as in copper penny coins. Also slang for a police officer. | Female | Word |
| Copper | A reddish brown metal - as in copper penny coins. Also slang for a police officer. | Female | Word |
| Cori | Maiden | Unisex | English |
| Cornelius | horn | Male | Latin |
| Cosmo | Order, universe.
| Male | Italian |
| Cougar | A large powerful American mountain cat | Male | Nature |
| Cozmo | | Unisex | Hebrew |
| Cricket | A leaping insect | Female | Nature |
| Cringer | after the tiger in the He-Man cartoon | Unisex | |
| Cris | Anointed, Follower Of Christ | Unisex | English |