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Surname Borer (Borer , الحفار , Bohrer ) , in all the world, is a common family name. The last name Borer is characteristic of Switzerland, where it is quite a common surname, Liechtenstein, and Syria, where it is quite a rare surname. In absolute terms, it is the most numerous in the United States, Brazil, and Switzerland. Much less frequently, Borer is the forename as well as the last name.