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Cognomen Maeng (Maeng , แมง , แม็ง ) , around the world, is a rare last name. The cognomen Maeng is characteristic of Aland Islands, where it is quite a common surname, Denmark, where it is a rare surname, and Thailand. In absolute terms, it is the most numerous in the United States, Thailand, and Indonesia. Likewise, Maeng is the forename as well as the last name.