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Surname Barbato (Barbato , Барбато , Барбат ) , throughout the world, is a common family name. The cognomen Barbato is habitual in Italy, where it is quite a common surname, Uruguay, where it is quite a rare surname, and Argentina. Not in comparison with a country's population, it is the most numerous in Italy, the United States, and Brazil. Very seldom, Barbato is the forename as well as the last name.