Surname Atún (Tuna 
, Atún 
) , throughout the world, is a common cognomen. The last name Atún is habitual in 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, Atún is the forename as well as the last name.