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Family name Krupka (Krupka , Крупка ) , across the world, is quite a common surname. The surname Krupka is characteristic of Eastern Europe, particularly Czechia, where it is quite a common surname, Ukraine, where it is quite a rare surname, and Slovakia. Not in comparison with a country's population, it is commonest in Eastern Europe, particularly Ukraine, Czechia, and Poland. Much less frequently, Krupka is the forename as well as the last name.