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Family name Libanio (Libanio , Libânio ) , globally, is quite a rare last name. The surname Libanio is characteristic of Portugal, where it is quite a rare surname, Brazil, and Switzerland, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Brazil, Portugal, and France. Much less frequently, Libanio is the forename as well as the last name.