| Name | Meaning | Gender | Origin |
|---|
| Chuichai | | Unisex | Hebrew |
| Chula | after Prince Chula Chakrabongse, member of Siam's royal family | Unisex | |
| Chumley | | Unisex | Hebrew |
| Chung | Common | Unisex | Vietnamese |
| Chyna | Middle Country | Unisex | English |
| Cinnamon | | Female | Hebrew |
| Cj | | Unisex | |
| Claudia | Feminine of Claude.
| Female | Latin |
| Clegg | | Unisex | Hebrew |
| Cleo | From Cleopatra - Her father's glory | Female | Greek |
| Cleo | From Cleopatra - Her father's glory | Female | Greek |
| Cleopatra | glory of the father | Female | Greek |
| Clouseau | after Inspector Clouseau from the Pink Panther movies | Unisex | |
| Coco | A pet name.
| Female | Spanish |
| Coco | A pet name.
| Female | Spanish |
| Coco | A pet name.
| Female | Spanish |
| Cocoa | cocoa Jumbo | Female | Color |
| Collins | Abbreviation Of Nicholas People`S Victory. | Female | French |
| Columbia | a dove | Female | Latin |
| Commander Wingnut | | Unisex | Hebrew |
| Companion Cube | | Unisex | Hebrew |
| Cookie | A small flat, crisp cake | Female | |
| Cookie Monster | | Unisex | Hebrew |
| 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 |