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Family name Dub (Dub , ダブ , Дуб ) , in the entire world, is quite a common cognomen. The last name Dub is characteristic of Eastern Europe, particularly Czechia, where it is quite a rare surname, Ukraine, and Moldova. Measured by absolute frequency, the name is most common in Ukraine, France, and Russia. Very seldom, Dub is the forename as well as the last name.