| Name | Meaning | Gender | Origin |
|---|
| Coconut | Edible white flesh of the coconut palm tree. | Unisex | |
| Coffee | | Unisex | Hebrew |
| Coke | Short for the most famous brand of soft drink, Coca-Cola. | Unisex | |
| Cola | Carbonated soft drink made in part from extract of the cola nut. | Unisex | |
| Columbine | Dove | Unisex | English |
| Comstock | | 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 |
| Coral | Greek for small stone. Sincere or from the sea. Marine animal whose skeletons form coral reefs. | Female | Nature |
| Cornbread | | Unisex | Hebrew |
| Cressida | gold | Female | Greek |
| Cricket | A leaping insect | Female | Nature |
| Crimson | A deep of vivid red colour. | Female | Color |
| Crusty | | Unisex | Hebrew |
| Crystal | Variant of Christiana. Follower of Christ.
| Female | |
| Crystal | Variant of Christiana. Follower of Christ.
| Female | |
| Custard | A dessert made from milk and eggs, creamy yellow in appearance. | Unisex | |
| Cypress | Cypress Tree | Female | Latin |
| Daffodil | | Female | |
| Dandelion | A yellow rosette shaped flower. | Unisex | |
| Dank | | Unisex | Hebrew |
| Dee | Dark | Unisex | Welsh |
| Delaney | From the elder tree grove.
| Female | Irish |
| Demon | | Unisex | |
| Demon | | Unisex | |