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Globally, スイ (Sui , スイ ) is a common principally female, but very infrequently male first name. The first name スイ is habitual in Eastern Asia, particularly Mongolia, where it is a widespread female name, Macao, where it is quite a rare girly name, and Hong Kong, where it is quite a rare unisex name. In absolute terms, it most frequently occurs in Mongolia, Indonesia, and India. More frequently, スイ is the last name as well as the forename.
スイ is also a name for the fictitious and mythical characters: .