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All over the world, Sayun (Sayun , Саюн , 사윤) is quite a rare gender-neutral given name. The first name Sayun is habitual in Tanzania, where it is a rare gender-neutral name, Indonesia, where it is a very rare unisex name, and Thailand, where it is a very rare boy's name. Measured by absolute frequency, this name is the most popular in India, Indonesia, and Tanzania. Also, Sayun is the last name as well as the forename.