World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Curtis Bay, Baltimore | USUSB | United States of America (the) |
| Curuan/Zamboanga | PHCUR | Philippines (the) |
| Cushendall | GBCUS | United Kingdom |
| Cushendun | GBCUE | United Kingdom |
| Cutris | CRCUT | Costa Rica |
| Cuxac-d'Aude | FRCA2 | France |
| Cuxhaven | DECUX | Germany |
| Cypress Bend | USYXB | United States of America (the) |
| Czarna | PLZAA | Poland |
| Czarna Dabrowka | PLCDB | Poland |