World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Unithai Container Terminal | THUCT | Thailand |
| Unity | USUHI | United States of America (the) |
| Unity Container Terminal | LKUCT | Sri Lanka |
| University Park | USUKK | United States of America (the) |
| Unnan | JPUUN | Japan |
| Uno | JPUNO | Japan |
| Unoshima | JPUNS | Japan |
| Unten | JPUNT | Japan |
| Ünye | TRUNY | Türkiye |
| Uomi | JPUOM | Japan |