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Surname Rohr (Rohr , 罗尔 , Рор ) , all around the world, is a common last name. The surname Rohr is characteristic of Western Europe, particularly Switzerland, where it is quite a common surname, Germany, where it is quite a rare surname, and Austria. Not in comparison with a country's population, it is the most numerous in Germany, the United States, and Brazil. Very seldom, Rohr is the forename as well as the last name.