World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Sozu | JPSOZ | Japan |
| Søby Havn | DKSOB | Denmark |
| Søgne | NOSNE | Norway |
| Søllested | DKSL2 | Denmark |
| Sømna | NOSMN | Norway |
| Sønderborg | DKSGD | Denmark |
| Sørarnoy | NOSOR | Norway |
| Sørfold | NOSOF | Norway |
| Sørkjosen | NOSOJ | Norway |
| Sørreisa | NOSRA | Norway |