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Cognomen 채 (Chae , 채 ) , across the world, is a common surname. The surname 채 is characteristic of South Korea, where it is quite a common surname, Myanmar, where it is quite a rare surname, and Singapore. Not in comparison with a country's population, it is commonest in South Korea, Myanmar, and the United States. Much less frequently, 채 is the forename as well as the last name.