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Surname Vilain (维兰 , Vilain , Vilein ) , across the world, is quite a common last name. The cognomen Vilain is characteristic of Cabo Verde, where it is quite a common surname, Belgium, where it is quite a rare surname, and France. Measured by absolute frequency, this name is the most popular in France, Belgium, and China. Also, Vilain is the forename as well as the last name.