| Name | Meaning | Gender | Origin |
|---|
| Buttons | | Unisex | Hebrew |
| Caramel | A smooth chewy candy | Unisex | English |
| Carlin | Descendant of Cearbhallán | Male | Gaelic |
| Casper | Treasurer | Male | Persian |
| Champagne | French region | Unisex | French |
| Chaos | Gaping void | Unisex | Greek |
| Charley | Free man | Unisex | German |
| Checkers | | Unisex | Hebrew |
| Cheerio | Brand of breakfast cereal | Unisex | English |
| Cherub | | Unisex | Hebrew |
| Chester | Camp | Male | Latin |
| Chica | Pet Name Meaning Little Girl. | Unisex | English |
| Chichi | Loving | Unisex | Korean |
| Chico | Boy | Male | Spanish |
| Chipper | Lively spirits, cheerful. Chip off the old block. | Unisex | English |
| Chopper | Slang for helicopter. One who chops or cuts. | Unisex | English |
| Clancy | Red | Male | Gaelic |
| Cocktail | | Unisex | Hebrew |
| Coco | A Pet Name. | Unisex | French |
| Cody | Descendant of Cuidighthigh | Male | Gaelic |
| Colin | Dove | Male | Gaelic |
| Comet | A celestial body | Unisex | English |
| Cookie | A small flat, crisp cake | Unisex | English |
| Cordell | Maker of cord | Male | English |
| Cotton | Woody hill | Unisex | Welsh |
| Coty | Riverbank | Male | French |
| Cricket | A leaping insect | Unisex | English |
| Cubby | | Unisex | Hebrew |
| Cuddles | To nestle or snuggle. | Unisex | English |
| Cutie | A cute character. | Unisex | English |