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Family name Bulhak (Bulhak , Булгак , Булхак ) , across the world, is quite a rare last name. The cognomen Bulhak is habitual in Belarus, where it is quite a rare surname, Ukraine, and Slovenia, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Eastern Europe, particularly Belarus, Russia, and Ukraine. Very seldom, Bulhak is the forename as well as the last name.