| Name | Meaning | Gender | Origin |
|---|
| Copper | A reddish brown metal - as in copper penny coins. Also slang for a police officer. | Female | Word |
| Coral | Greek for small stone. Sincere or from the sea. Marine animal whose skeletons form coral reefs. | Female | Nature |
| Coriander | | Unisex | |
| Corona | Brand of Mexican beer | Female | Spanish |
| Cougar | A large powerful American mountain cat | Male | Nature |
| Cow | | Unisex | Hebrew |
| Crater | | Unisex | Hebrew |
| Crescent | one who creates | Female | |
| Cricket | A leaping insect | Female | Nature |
| Crystal | Variant of Christiana. Follower of Christ.
| Female | |
| Crystal | Variant of Christiana. Follower of Christ.
| Female | |
| Cub | | Unisex | |
| Cyclone | A violent rotating windstorm. | Unisex | |
| Cygnus | | Unisex | Hebrew |
| Cypress | Cypress Tree | Female | Latin |
| Cyprus | Cypress Tree | Male | English |
| Daffodil | | Female | |
| Dahlia | Flower Named For Botanist A. Dahl | Female | Greek |
| Daisy | Day's eye. A flower name.
| Female | |
| Daisy | Day's eye. A flower name.
| Female | |
| Dakota | Friend: ally. Tribal name.
| Female | Place-name |
| Dale | Lives in the valley
| Male | English |
| Daphne | laurel, bay tree, victory | Female | Greek |
| Dawn | Early riser
| Female | Word |
| Delta | Mouth Of A River | Female | Greek |