| Name | Meaning | Gender | Origin |
|---|
| Christmas | Festival Of Christ | Male | English |
| Cinder | | Unisex | Hebrew |
| Citrine | | Unisex | Hebrew |
| Clancy | offspring of red-headed soldier | Male | Irish |
| Clifford | Lives by the ford near the cliff
| Male | English |
| Clorox | | Unisex | Hebrew |
| Cloud | | Male | Hebrew |
| Cloudy | | Male | Hebrew |
| Clove | Spice | Male | German |
| Cobalt | | Male | Hebrew |
| Coby | Supplanter, Representative | Male | English |
| 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 | |
| Colby | coal town | Male | English |
| Colby | coal town | Male | English |
| Cole | coal, victory of the people | Male | English |
| Colorado | | Male | Hebrew |
| Columbine | Dove | Unisex | English |
| Comstock | | Unisex | Hebrew |
| Corey | raven, from the hollow | Male | Irish |
| Cornbread | | Unisex | Hebrew |
| Cornelius | horn | Male | Latin |
| Cotton | | Male | Hebrew |