| City | Administrative Division | Country | |
| Cumberland Island National Sea | Georgia | United States | |
| Cumming | Georgia | United States | |
| Cupertino | California | United States | |
| Curepipe | - | Mauritius | |
| Curitiba | Paraná | Brazil | |
| Cusco | Cuzco | Peru | |
| Custer | South Dakota | United States | |
| Cutchogue | New York | United States | |
| Cypress | Texas | United States | |
