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All around the world, シウ (Siu , シウ ) is a common epicene first name. The first name シウ is habitual in Hong Kong, where it is quite a common gender-neutral name, Macao, and Indonesia, where it is quite a rare mostly feminine, but infrequently masculine name. Measured by absolute frequency, it is the most numerous in Hong Kong, Indonesia, and the United States. Likewise, シウ is the last name as well as the forename.
シウ is also a name for the fictitious and mythical characters: .