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Surname Loaiza (Loaiza , لويزا , Лоайса ) , in the world, is a common cognomen. The family name Loaiza is habitual in Latin America and the Caribbean, particularly Colombia, where it is a common surname, Costa Rica, and Peru, where it is quite a common surname (explore the name in all countries). In absolute terms, it is the most numerous in Latin America and the Caribbean, particularly Colombia, Mexico, and Peru. Much less frequently, Loaiza is the forename as well as the last name.