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Cognomen Iriarte (Iri , Iriarte ) , worldwide, is a common last name. The cognomen Iriarte is characteristic of Latin America and the Caribbean, particularly Bolivia, where it is quite a common surname, Paraguay, and Argentina (explore the name in all countries). Measured by absolute frequency, it is commonest in Latin America and the Caribbean, particularly Argentina, Colombia, and Bolivia. Very seldom, Iriarte is the forename as well as the last name.