World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Sumenep, Madura | IDSUP | Indonesia |
| Sumie | JPSMI | Japan |
| Suminoe | JPSUM | Japan |
| Sumiton | USASZ | United States of America (the) |
| Sumiyoshi | JPSMY | Japan |
| Summa | FISMA | Finland |
| Summercourt | GBSMU | United Kingdom |
| Summerland Key | USSK3 | United States of America (the) |
| Summerside | CASUM | Canada |
| Sumoto, Hyogo | JPSUH | Japan |