World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Carrizal | ESCDI | Spain |
| Carroll | USCWU | United States of America (the) |
| Carron | GBRRO | United Kingdom |
| Carsethorn | GBCET | United Kingdom |
| Cartagena | COCTG | Colombia |
| Cartagena | ESCAR | Spain |
| Cartago | COCRC | Colombia |
| Carteret | USCSF | United States of America (the) |
| Carthage | USQCH | United States of America (the) |
| Carthage | USCGX | United States of America (the) |