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Cognomen Kahr (Kahr
, קאהר
, كاهر) , globally, is quite a rare family name. The last name Kahr is characteristic of Estonia, where it is quite a common surname, Austria, and Eswatini, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Western Europe, particularly Austria, Germany, and Switzerland. Very seldom, Kahr is the forename as well as the last name.