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Cognomen Masuk (Masuk , マスク , 玛素) , throughout the world, is quite a common family name. The cognomen Masuk is characteristic of Western Asia, particularly Oman, where it is quite a rare surname, Qatar, and Bahrain. In absolute terms, this name is the most popular in Bangladesh, Thailand, and India. More frequently, Masuk is the forename as well as the last name.