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Surname Knauer (Knauer , Кнауер , Кнауэр ) , around the world, is a common last name. The surname Knauer is habitual in Germany, where it is quite a common surname, Austria, where it is quite a rare surname, and Cyprus. In absolute terms, it is the most numerous in Germany, the United States, and Austria. Much less frequently, Knauer is the forename as well as the last name.