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Surname Geier (Geier , Гайер , 盖尔 ) , in the entire world, is a common family name. The cognomen Geier is habitual in Germany, where it is quite a common surname, Austria, and Kazakhstan, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Germany, the United States, and Austria. Very seldom, Geier is the forename as well as the last name.