World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Sonoura | JPSOR | Japan |
| Sonoyama | JPSYM | Japan |
| Soo | EESSO | Estonia |
| Sooke | CASOO | Canada |
| Sopers Hole | VGSHO | Virgin Islands (British) |
| Sopot | PLSOP | Poland |
| Söråker | SESOR | Sweden |
| Sorcy-Saint-Martin | FRYSM | France |
| Sorel | CASOR | Canada |
| Sorel-Tracy | CAST6 | Canada |