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Family name Kummer (Kummer , Куммер , كومر ) , throughout the world, is a common cognomen. The surname Kummer is characteristic of Western Europe, particularly Switzerland, where it is quite a common surname, Austria, and Germany. Not in comparison with a country's population, the name is most common in Germany, the United States, and Switzerland. Very seldom, Kummer is the forename as well as the last name.