World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Sumoto, Kumamoto | JPSUT | Japan |
| Sumqayit | AZSUQ | Azerbaijan |
| Sunami | JPSXM | Japan |
| Sünching | DESNC | Germany |
| Sund | SESUN | Sweden |
| Sund | NOSND | Norway |
| Sund - Karmøy | NOUND | Norway |
| Sundar, Sarawak | MYSDR | Malaysia |
| Sundby/Mors | DKSNY | Denmark |
| Sundbyberg | SESUG | Sweden |