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Last name Maruniak (Maruniak , Маруняк ) , globally, is quite a rare family name. The family name Maruniak is characteristic of Eastern Europe, particularly Slovakia, where it is quite a rare surname, Ukraine, and Poland, where it is a rare surname. In absolute terms, this name is the most popular in Eastern Europe, particularly Ukraine, Slovakia, and Russia. Much less frequently, Maruniak is the forename as well as the last name.