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Around the globe, シオ (Sio , Shio , シオ ) is quite a common gender-neutral first name. The first name シオ is habitual in Macao, where it is quite a common unisex name, Georgia, where it is quite a common masculine name, and Hong Kong, where it is a rare female name. Measured by absolute frequency, it is the most numerous in India, Indonesia, and Georgia. Also, シオ is the last name as well as the forename.
シオ is also a name for the fictitious and mythical characters: Sio Bibble , the Star Wars character, Star Wars: Episode I – The Phantom Menace and Sio Kusunoki , the virtual YouTube personality.