World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Otaru | JPOTR | Japan |
| Otawa | JPOTW | Japan |
| Oteiza/Bislig | PHOTE | Philippines (the) |
| Otematata | NZOTT | New Zealand |
| Otepa | PFOTP | French Polynesia |
| Oteren | NOT8N | Norway |
| Oterleek | NLORL | Netherlands |
| Othonoí | GROTH | Greece |
| Oti | EEOTI | Estonia |
| Otomi | JPOTM | Japan |