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Cognomen Hopf (Hopf , ホップ , هوف ) , in the entire world, is a common family name. The cognomen Hopf is habitual in Western Europe, particularly Germany, where it is quite a rare surname, Austria, and Switzerland. Measured by absolute frequency, it most frequently occurs in Germany, the United States, and Austria. Much less frequently, Hopf is the forename as well as the last name.