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Across the world, Thuy (Thuy , Thúy , Тхуы ) is a common dominantly girly, but seldom boy's forename. The first name Thuy is habitual in Macao, where it is a common principally girly, but very infrequently male name, Vietnam, where it is quite a common epicene name, and Australia, where it is quite a rare girly name. In absolute terms, it is the most numerous in Vietnam, the United States, and Macao. Also, Thuy is the last name as well as the forename.
Thuy is also a name for the fictitious and mythical characters: Thuy , the musical character in the musical Miss Saigon by Claude-Michel Schönberg; Thúy Kiều , the character in "The Tale of Kieu" and Thúy Vân , the character in "The Tale of Kieu".