Cognomen ทูน่า (Tuna 
, Tuana 
, Thuna 
) , worldwide, is a common last name. The surname ทูน่า is characteristic of Turkey, where it is quite a common surname, Kosovo, where it is quite a rare surname, and Namibia. Measured by absolute frequency, it is commonest in Turkey, Ethiopia, and Indonesia. Likewise, ทูน่า is the forename as well as the last name.