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Around the world, Thái (Thai , Thái , 蔡 ) is a common largely male, but infrequently female given name. The forename Thái is characteristic of Vietnam, where it is quite a common primarily boy's, but very infrequently girly name, Macao, where it is quite a common gender-neutral name, and Saudi Arabia, where it is quite a rare largely boy's, but uncommonly feminine name. Not in comparison with a country's population, it is commonest in Vietnam, China, and the United States. Predominantly, Thái is the last name as well as the forename.
Thái is also a name for the fictitious and mythical characters: .