World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Ohata | JPOHT | Japan |
| Ohbe, Kagawa | JPOBX | Japan |
| Ohbishima | JPOBS | Japan |
| Ohbukura/Uwajima | JPOKR | Japan |
| Ohdana | JPODN | Japan |
| Ohfukaura | JPOFR | Japan |
| Ohfunakoshi | JPOFK | Japan |
| Ohfunato | JPOFT | Japan |
| Ohgaki | JPOOG | Japan |
| Ohgasari | JPOSR | Japan |