Family name Klačko (Клачко 
, Klačko 
) , in the world, is a rare surname. The last name Klačko is characteristic of Eastern Europe, particularly Slovakia, where it is quite a rare surname, Belarus, where it is a rare surname, and Ukraine. Much less frequently, Klačko is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Клачко | Ukraine, Kazakhstan, Russia, Belarus, Kyrgyzstan |
| Klačko | Slovakia |
| herman klačko RU (b. 1913) |
|
|
| maroš klačko SK (b. 1981) |
|