World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| San Mames De Meruelo | ESM8M | Spain |
| San Marcos de Tarrazu | CRMTZ | Costa Rica |
| San Martín | AQSMT | Antarctica |
| San Martin | ARSMR | Argentina |
| San Martin | ARSMA | Argentina |
| San Mateo | USSXF | United States of America (the) |
| San Miguel Del Arroyo | ESSO8 | Spain |
| San Miguel Xoxtla | MXSGX | Mexico |
| San Nicolas | PESNX | Peru |
| San Nicolás de los Arroyos | ARSNS | Argentina |