World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Omaezaki | JPOMZ | Japan |
| Omaha | USOMA | United States of America (the) |
| Omastranda | NOOMA | Norway |
| Ombo | NOOMB | Norway |
| Ombret-Rawsa | BEOBT | Belgium |
| Omedu Rand | EEOMR | Estonia |
| Omi | JPAOM | Japan |
| Omi | JPOMI | Japan |
| Ominato | JPOMT | Japan |
| Omis | HROMS | Croatia |