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Family name Tuz (Tuz , Dous , Туз ) , across the world, is a common last name. The last name Tuz is characteristic of Mexico, where it is quite a common surname, Ukraine, where it is quite a rare surname, and Algeria. Measured by absolute frequency, the name is most common in Mexico, Ukraine, and Turkey. Much less frequently, Tuz is the forename as well as the last name.