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Cognomen אדלר (Adler , Edler , Allder ) , globally, is a common last name. The surname אדלר is habitual in Israel, where it is quite a common surname, Austria, and Germany (explore the name in all countries). Not in comparison with a country's population, it is commonest in Germany, the United States, and Israel. Much less frequently, אדלר is the forename as well as the last name.