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Surname Клюге (Kluge , Клюге , Klyuge ) , across the world, is a common last name. The cognomen Клюге is characteristic of Germany, where it is quite a common surname, Estonia, where it is quite a rare surname, and Denmark. In absolute terms, it is commonest in Germany, the United States, and Brazil. Much less frequently, Клюге is the forename as well as the last name.