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Family name Pietrzyk (Pietrzyk , Петшик ) , worldwide, is quite a common surname. The last name Pietrzyk is habitual in Poland, where it is quite a common surname, Malta, where it is quite a rare surname, and Ireland, where it is a rare surname. Not in comparison with a country's population, the name is most common in Poland, the United States, and Germany. Also, Pietrzyk is the forename as well as the last name.