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All over the world, Isin (Isin , Исин , یسین) is a rare gender-neutral given name. The given name Isin is habitual in Bulgaria, where it is quite a rare boy's name, Morocco, where it is a very rare male name, and Nigeria, where it is a very rare unisex name. Measured by absolute frequency, it most frequently occurs in Nigeria, Indonesia, and Bulgaria. More frequently, Isin is the last name as well as the forename.