Vi har så langt registrert 1 350 havner
| Navn | Grunnlagt | | Cardiff, Wales, UK | |
| Caripito, Venetzuela | |
| Cartagena, Colombia | |
| Cartagena, Spania | |
| Casablanca, Morocco | |
| Castellamare, Sicilia, Italia | |
| Catania, Sicilia, Italia | |
| Catia la Mar, Venezuela | |
| Cayenne, Fransk Guyana | |
| Cebu | |
| Ceiba, Hunduras | |
| Celle, Tyskland | |
| Ceuta, Spania | |
| Chandler, Quebec, Canada | |
| Charleston, SC, USA | |
| Chatham, U.K | |
| Cherbourg, Frankrike | |
| Chester,Canada | |
| Chiba, Japan | |
| Chicago, IL, USA | |
| Chingwantao, Kina | |
| Chios, Hellas | |
| Chittagong, Bangladesh | |
| Christchurch, New Zealand | |
| Christobal, Panama | |
