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Last name Kiyuna (Kiyuna ) , around the world, is a rare surname. The last name Kiyuna is habitual in Latin America and the Caribbean, particularly Bolivia, where it is a rare surname, Brazil, where it is a very rare surname, and Argentina. Not in comparison with a country's population, it is commonest in Brazil, the United States, and Bolivia. Much less frequently, Kiyuna is the forename as well as the last name.