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Cognomen Tuna (Tuna , ツナマヨ , טונה ) , throughout the world, is a common surname. The surname Tuna is characteristic of Turkey, where it is quite a common surname, Kosovo, where it is quite a rare surname, and Namibia. Not in comparison with a country's population, it is the most numerous in Turkey, Ethiopia, and Indonesia. Likewise, Tuna is the forename as well as the last name.