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Throughout the world, ルイン (Lwin , ルイン) is a widespread gender-neutral first name. The first name ルイン is habitual in Mongolia, where it is a prevalent epicene name, Myanmar, where it is quite a rare unisex name, and Singapore. Measured by absolute frequency, the name is most common in Mongolia, Myanmar, and Indonesia. Likewise, ルイン is the last name as well as the forename.