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Across the world, Yain (Yain , Яин , ใช่) is a rare unisex first name. The forename Yain is characteristic of Argentina, where it is a rare mostly masculine, but seldom female name, Mexico, where it is a very rare unisex name, and India, where it is a very rare dominantly feminine, but seldom male name. More prevalently, Yain is the last name as well as the forename.