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Family name Worm (Worm , Ворм , ورم ) , in the world, is quite a common last name. The cognomen Worm is habitual in Denmark, where it is quite a common surname, Germany, where it is quite a rare surname, and Netherlands. In absolute terms, it is commonest in Germany, the United States, and Denmark. Very seldom, Worm is the forename as well as the last name.