World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| San Carlos | ARSCA | Argentina |
| San Carlos | MXSCR | Mexico |
| San Carlos de la Rápita | ESSCR | Spain |
| San Carlos/Dumaguete | PHSCA | Philippines (the) |
| San Cataldo | ITNCT | Italy |
| San Ciprian | ESSCI | Spain |
| San Cristobal de Entrevinas | ESV8C | Spain |
| San Diego | USSAN | United States of America (the) |
| San Esteban de Pravia | ESSEO | Spain |
| San Felice Circeo | ITSFE | Italy |