World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Kõrgessaare | EEKRG | Estonia |
| Kórinthos | GRKRT | Greece |
| Körmend | HUKOR | Hungary |
| Koromacno | HRKRM | Croatia |
| Koror | PWROR | Palau |
| Korppoo (Korpo) | FIKOR | Finland |
| Korsakov | RUKOR | Russian Federation (the) |
| Korsør | DKKRR | Denmark |
| Kortrijk | BEKJK | Belgium |
| Korycany | CZKOR | Czechia |