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Globally, สิ่ว (Sio , Chisar , Chisin ) is quite a rare gender-neutral first name. The first name สิ่ว is habitual in Macao, where it is quite a common unisex name, Hong Kong, where it is a rare female name, and Indonesia, where it is a rare epicene name. In absolute terms, it is commonest in Indonesia, India, and Macao. Likewise, สิ่ว is the last name as well as the forename.
สิ่ว 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.