| Code | Name | Region |
|---|---|---|
| CZKRI | Krinec | JC |
| CZKEN | Krmelin | MO |
| CZKRN | Krnov | |
| CZKMR | Kromeriz | |
| CZKBK | Krucemburk | VY |
| CZUKK | Krupka | US |
| CZSKE | Krusovice | ST |
| CZKRY | Kryry | |
| CZKUK | Kuklov | |
| CZMZ4 | Kuncice Pod Ondrejnikem | MO |
| CZKUB | Kuncicky U Basky | MO |
| CZPUA | Kuncina | PA |
| CZKJM | Kunice | JM |
| CZKUS | Kunice | ST |
| CZKME | Kralice | |
| CZRNH | Kralice Na Hane | |
| CZKLK | Kraliky | |
| CZKLO | Kralov | 72 |
| CZKRL | Kralovec | |
| CZKVI | Kralovice | PL |
| CZSTK | Kralovice | ST |
| CZPA5 | Kralovske Vinohrady | ST |
| CZKNV | Kralupy Nad Vltavou | |
| CZKDR | Kraluv Dvur | ST |
| CZRAS | Krasejovka | JC |
| CZKRS | Krasikov | PA |
| CZKKE | Kraslice | KA |
| CZKSA | Krasna | |
| CZKHV | Krasna Hora Nad Vltavou | ST |
| CZUKA | Krasna Lipa | US |
| CZKRA | Krasno | |
| CZKVR | Kravare | MO |
| CZKCP | Kravare U Ceske Lipa | LI |
| CZKSU | Kravare Ve Slezsku | MO |
| CZKSL | Kostelec Nad Labem | ST |
| CZKOO | Kostelec Nad Orlici | |
| CZKSN | Kostenice | JC |
| CZKTC | Kostenice | PA |
| CZKTE | Kostice | JM |
| CZKST | Kostomlatky | ST |
| CZKLM | Kostomlaty Nad Labem | VY |
| CZKOT | Kotvrdovice | JM |
| CZKOU | Kounice | |
| CZKRM | Kourim | |
| CZKNS | Kout Na Sumave | PL |
| CZKOY | Kouty | VY |
| CZKOV | Kozarovice | ST |
| CZKOZ | Kozlany | PL |
| CZKZC | Kozmice | ST |
| CZKZY | Kozojedy | PL |