World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Iida | JPIDA | Japan |
| Iinoseto | JPINT | Japan |
| Iisalmi (Idensalmi) | FIIIS | Finland |
| Iizuka | JPZKA | Japan |
| IJmuiden/Velsen | NLIJM | Netherlands |
| IJsselmuiden | NLISM | Netherlands |
| Ijsselsteyn | NLSL7 | Netherlands |
| Ikara | JPIKR | Japan |
| Ikata | JPIKT | Japan |
| Ikeda, Kagawa | JPIKA | Japan |