| Christille | Woman | American Names |
| Chrystal | Woman | American Names |
| Chuck | Man | American Names |
| Chynna | Woman | American Names |
| Cielle | Woman | American Names |
| Cierra | Woman | American Names |
| Cinnamon | Woman | American Names |
| Civilla | Woman | American Names |
| Clarity | Woman | American Names |
| Cledith | Unisex | American Names |
| Cleta | Woman | American Names |
| Clever | Unisex | American Names |
| Cliffanie | Woman | American Names |
| Cloud | Unisex | American Names |
| Clovia | Woman | American Names |
| Coco | Woman | American Names |
| Cocoa | Unisex | American Names |
| Colandra | Woman | American Names |
| Coleka | Woman | American Names |
| Colissa | Woman | American Names |