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Globally, Tuân (Tuan , Tuân ) is a common male given name. The given name Tuân is characteristic of Vietnam, where it is quite a common boy's name, Macao, where it is quite a common gender-neutral name, and Sri Lanka, where it is quite a common principally male, but very infrequently female name. Measured by absolute frequency, it is the most numerous in Vietnam, the United States, and Indonesia. Much less frequently, Tuân is the last name as well as the forename.
Tuân is also a name for the fictitious and mythical characters: .