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All over the world, Yein (Yein , Еин ) is a rare principally girly, but very infrequently boy's first name. The forename Yein is habitual in South Korea, where it is a rare female name, Colombia, where it is a rare epicene name, and Myanmar, where it is a very rare feminine name. Not in comparison with a country's population, the name is most common in South Korea, Colombia, and Indonesia. More prevalently, Yein is the last name as well as the forename.