World Sea Ports
| Port Name | Port Code | Country Name |
|---|---|---|
| Krishnapatnam | INKRI | India |
| Kristiansand | NOKRS | Norway |
| Kristianstad | SEKID | Sweden |
| Kristiansund | NOKSU | Norway |
| Kristinehamn | SEKHN | Sweden |
| Kristinestad (Kristiinankaupunki) | FIKRS | Finland |
| Kristoffervalen | NOKVL | Norway |
| Krivosheino | RUKRI | Russian Federation (the) |
| Krk | HRKRK | Croatia |
| Krokfjardarnes | ISKRO | Iceland |