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Cognomen Scharer (Scharer , Schärer , 沙勒 ) , in all the world, is quite a common last name. The surname Scharer is habitual in Switzerland, where it is quite a common surname, Norway, where it is quite a rare surname, and Austria. Not in comparison with a country's population, the name is most common in Switzerland, the United States, and Germany. Much less frequently, Scharer is the forename as well as the last name.