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Cognomen Wacker (Wacker , 瓦克 , Ваккер ) , across the world, is a common surname. The last name Wacker is habitual in Western Europe, particularly Germany, where it is quite a common surname, Switzerland, where it is quite a rare surname, and Austria. Measured by absolute frequency, it is the most numerous in Germany, the United States, and Switzerland. Very seldom, Wacker is the forename as well as the last name.