| Name | Meaning | Gender | Origin |
|---|
| Carbon | Soft, black material. Carbon copying paper. | Unisex | |
| Cari | Flows Like Water | Unisex | Turkish |
| Carnation | Carnation Flower | Unisex | English |
| Cashew | A kidney shaped nut. | Unisex | |
| Cassis | | Unisex | Hebrew |
| Charcoal | A black carbon material produced from wood | Unisex | |
| Cheena | | Unisex | Hebrew |
| Cheese | | Unisex | Hebrew |
| Chestnut | Deciduous tree with an edible deep reddish brown nut. | Unisex | |
| Chowder | | Unisex | Hebrew |
| Cinder | | Unisex | Hebrew |
| Citrine | | Unisex | Hebrew |
| Clorox | | Unisex | Hebrew |
| 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 |
| Cornbread | | Unisex | Hebrew |
| Crusty | | Unisex | Hebrew |
| Custard | A dessert made from milk and eggs, creamy yellow in appearance. | Unisex | |
| Dandelion | A yellow rosette shaped flower. | Unisex | |
| Dank | | Unisex | Hebrew |
| Dee | Dark | Unisex | Welsh |