| Name | Meaning | Gender | Origin |
|---|
| Caligula | Little boots | Unisex | Latin |
| Calvin | Bald | Male | French |
| Candy | Honest | Female | Latin |
| Caramel | A smooth chewy candy | Unisex | English |
| Carina | Beloved | Female | Latin |
| Carlin | Descendant of Cearbhallán | Male | Gaelic |
| Carlotta | Free man | Female | German |
| Carly | Free man | Female | German |
| Casey | From Cayce | Male | American English |
| Charla | Free man | Female | German |
| Charlene | Free man | Female | German |
| Charlotte | Free man | Female | Germanic |
| Charmian | Joy, delight | Female | Greek |
| Cheerio | Brand of breakfast cereal | Unisex | English |
| Cherub | | Unisex | Hebrew |
| Chica | Pet Name Meaning Little Girl. | Unisex | English |
| Chichi | Loving | Unisex | Korean |
| Chico | Boy | Male | Spanish |
| Chip | Free man | Male | German |
| Chipper | Lively spirits, cheerful. Chip off the old block. | Unisex | English |
| Chiquita | Small one | Female | Spanish |
| Cinder | | Unisex | Hebrew |
| Cinderella | Little ash girl | Female | English |
| Ciqala | Small one | Unisex | Native American |
| Clarice | Clear | Female | Latin |
| Coco | A Pet Name. | Unisex | French |
| Cody | Descendant of Cuidighthigh | Male | Gaelic |
| Colman | Dove | Male | English |
| Comet | A celestial body | Unisex | English |
| Cookie | A small flat, crisp cake | Unisex | English |