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Throughout the world, Bùi (Bui , Bùi , Буй ) is a common epicene forename. The given name Bùi is characteristic of Macao, where it is quite a common female name, Vietnam, where it is quite a rare gender-neutral name, and India, where it is a rare predominantly female, but very infrequently male name. In absolute terms, the name is most common in India, Vietnam, and Indonesia. Likewise, Bùi is the last name as well as the forename.
Bùi is also a name for the fictitious and mythical characters: .