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Surname Guz (Guz , Гузь , Гуз ) , worldwide, is a common family name. The family name Guz is habitual in Eastern Europe, particularly Ukraine, where it is quite a common surname, Belarus, where it is quite a rare surname, and Poland. Not in comparison with a country's population, it most frequently occurs in Eastern Europe, particularly Ukraine, Russia, and Poland. Likewise, Guz is the forename as well as the last name.