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Family name Kirsch (Kirsch , Кирш , קירש ) , across the world, is a common surname. The surname Kirsch is habitual in Luxembourg, where it is quite a common surname, Germany, and Estonia, where it is quite a rare surname. In absolute terms, this name is the most popular in Germany, the United States, and Brazil. Much less frequently, Kirsch is the forename as well as the last name.