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Surname Frei (Frei , فري , Фрай , among others...) , throughout the world, is a common last name. The cognomen Frei is habitual in Western Europe, particularly Liechtenstein, where it is a common surname, Switzerland, and Germany, where it is quite a common surname (explore the name in all countries). In absolute terms, it most frequently occurs in Switzerland, Germany, and the United States. Much less frequently, Frei is the forename as well as the last name.