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Last name Stefanik (Stefanik , Стефаник ) , in the world, is quite a common surname. The cognomen Stefanik is characteristic of Eastern Europe, particularly Slovakia, where it is quite a common surname, Czechia, where it is quite a rare surname, and Poland. In absolute terms, it is commonest in Slovakia, the United States, and Poland. Likewise, Stefanik is the forename as well as the last name.