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Surname Muen (沐恩 , หมืน
, Muen
) , in all the world, is a rare family name. The family name Muen is characteristic of Malaysia, where it is a rare surname, Australia, where it is a very rare surname, and Thailand. Measured by absolute frequency, it most frequently occurs in Malaysia, China, and Indonesia. More frequently, Muen is the forename as well as the last name.