| Cobb | Man | English Names |
| Coby | Unisex | Hebrew Names |
| Cocheta | Woman | Native American Names |
| Cochise | Unisex | Native American - Apache Names |
| Cochran | Unisex | Scottish Names |
| Coco | Woman | American Names |
| Cocoa | Unisex | American Names |
| Cocohuay | Unisex | Incan Names |
| Coda | Unisex | Italian Names |
| Cody | Man | English Names |
| Coe | Unisex | English Names |
| Coen | Man | German Names |
| Coeur | Unisex | French Names |
| Coffey | Unisex | Irish Names |
| Cohen | Man | Hebrew Names |
| Coilin | Man | Scottish Names |
| Colandra | Woman | American Names |
| Colby | Unisex | English Names |
| Cole | Man | English Names |
| Coleka | Woman | American Names |