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Surname Renger (Renger , Ренгер ) , in the world, is quite a rare family name. The last name Renger is habitual in Western Europe, particularly Germany, where it is quite a rare surname, Austria, where it is a rare surname, and Netherlands. In absolute terms, it is commonest in Germany, France, and the United States. Very seldom, Renger is the forename as well as the last name.