| Name | Meaning | Gender | Origin |
|---|
| Buckwheat | | Unisex | Hebrew |
| Bumblebee | | Unisex | |
| Bunny | little rabbit | Female | Nickname |
| Butterbean | | Unisex | Hebrew |
| Buttercup | A bright yellow flowered plant. Also a term of endearment. | Female | |
| Calida | Ardent
| Female | Spanish |
| Calvina | Feminine form of Calvino bald
| Female | Latin |
| Carbon | Soft, black material. Carbon copying paper. | Unisex | |
| Carla | Manly | Female | Italian |
| Carmel | From the vinyard
| Female | Hebrew |
| Cassidy | Clever: Curly-headed.
| Female | Irish |
| Celectina Warbeck | Popular singing sorceress.
| Female | |
| Char | Beloved | Unisex | Celtic |
| Chicko | | Unisex | Hebrew |
| Chiclet | Brand of chewing gum whose feature is small square candy coated pieces. | Unisex | |
| Chloe | Fresh young blossom, Greek for blooming | Female | Greek |
| Cho Chang | | Unisex | |
| Circe | witch-goddess, seductive | Female | Greek |
| Cj | | Unisex | |
| Cluedo | | Unisex | Hebrew |
| Coca-Cola | | Unisex | |
| Coco | A pet name.
| Female | Spanish |
| Coco | A pet name.
| Female | Spanish |
| Coco | A pet name.
| Female | Spanish |
| Cocoa | cocoa Jumbo | Female | Color |