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Last name Kunshin (Kunshin , Куншин , Куньшин ) , throughout the world, is a rare surname. The family name Kunshin is habitual in Russia, where it is a rare surname, Kazakhstan, and Israel, where it is a very rare surname. Measured by absolute frequency, it is commonest in Russia, Kazakhstan, and Ukraine. More prevalently, Kunshin is the forename as well as the last name.