World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Sedan | USSE4 | United States of America (the) |
| Sedgewick | CASED | Canada |
| Sedlec | CZNKN | Czechia |
| Seelbach | DESXE | Germany |
| Seeshaupt | DESE8 | Germany |
| Segamat | MYSGM | Malaysia |
| Segawa | JPSGW | Japan |
| Segezha | RUSEG | Russian Federation (the) |
| Segnitz | DEKFT | Germany |
| Segré | FREGR | France |