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Cognomen Berti (Berti , بيرتي , ברטי , and others...) , all over the world, is a common surname. The cognomen Berti is habitual in San Marino, where it is a widespread surname, Italy, where it is quite a common surname, and Monaco (explore the name in all countries). Measured by absolute frequency, it is commonest in Italy, Brazil, and Argentina. Very seldom, Berti is the forename as well as the last name.