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Surname קופל (Kopel , Koppel , Coppel ) , throughout the world, is a common cognomen. The last name קופל is characteristic of Estonia, where it is a common surname, Switzerland, where it is quite a common surname, and Israel. Measured by absolute frequency, the name is most common in the United States, Estonia, and Switzerland. Very seldom, קופל is the forename as well as the last name.