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Across the world, Sju (Siu , Sju , Sjau ) is a common epicene first name. The first name Sju is habitual in Hong Kong, where it is quite a common gender-neutral name, Macao, and Indonesia, where it is quite a rare mostly female, but uncommonly male name. Not in comparison with a country's population, it is commonest in Hong Kong, Indonesia, and the United States. Likewise, Sju is the last name as well as the forename.
Sju is also a name for the fictitious and mythical characters: .