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Last name Jankowska (Jankowska , Янковская ) , throughout the world, is a common surname. The surname Jankowska is habitual in Eastern Europe, particularly Poland, where it is quite a common surname, Belarus, and Moldova, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Eastern Europe, particularly Poland, Russia, and Belarus. More prevalently, Jankowska is the forename as well as the last name.