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Family name Lysak (Lysak , Лысак , Лисак ) , in the entire world, is a common surname. The surname Lysak is characteristic of Eastern Europe, particularly Ukraine, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Czechia. Not in comparison with a country's population, it is the most numerous in Ukraine, Russia, and Kazakhstan. Much less frequently, Lysak is the forename as well as the last name.