World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Janesville | USJVL | United States of America (the) |
| Jang Bogo Station | AQJBS | Antarctica |
| Janghang/Seocheon-gun | KRCHG | Korea, Republic of |
| Janowiec | PLLUU | Poland |
| Japons | ATJPS | Austria |
| Japsi Kalasadam | EEJAP | Estonia |
| Jarenina | SIJAR | Slovenia |
| Järfälla | SEJAR | Sweden |
| Jaristea | ROJRT | Romania |
| Jarjis | TNJAR | Tunisia |