World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Niue Island | NUIUE | Niue |
| Niuguling | CNNKL | China |
| Niutoushan | CNNTN | China |
| Nivti | INNVT | India |
| Nixon | USNIX | United States of America (the) |
| Nizhnevartovsk | RUNJC | Russian Federation (the) |
| Nizhniy Novgorod (ex Gorkiy) | RUGOJ | Russian Federation (the) |
| Nizhnyaya Pesha | RUNPE | Russian Federation (the) |
| Njardvik | ISNJA | Iceland |
| Njord | XZNJO | Installations in International Waters |