World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Seurre | FRSUP | France |
| Seven Islands Bay | CASEB | Canada |
| Seventeen Mile Rocks/Brisbane | AUSMR | Australia |
| Severo-Kurilsk | RUSVK | Russian Federation (the) |
| Severodvinsk | RUSEW | Russian Federation (the) |
| Severomorsk | RUSRM | Russian Federation (the) |
| Sevilla | ESSVQ | Spain |
| Sevington | GBSVI | United Kingdom |
| Seybaplaya | MXSEY | Mexico |
| Seydisfjørdur | ISSEY | Iceland |