World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Umm Sa'id (Mesaieed) | QAUMS | Qatar |
| Umpqua | US9QA | United States of America (the) |
| Umrur | PHURR | Philippines (the) |
| Underås | SEUND | Sweden |
| Unije | HRUNJ | Croatia |
| Union Center | USZUC | United States of America (the) |
| Union Gap | USYUG | United States of America (the) |
| Union Island | VCUNI | Saint Vincent and the Grenadines |
| Unionhall | IEUHL | Ireland |
| Uniontown | USUT2 | United States of America (the) |