Cognomen يوناس (Joonas 
, Ionas 
, يوناس) , in all the world, is quite a rare surname. The surname يوناس is characteristic of Moldova, where it is quite a common surname, Romania, and Estonia. Not in comparison with a country's population, it is commonest in Romania, Moldova, and Greece. Likewise, يوناس is the forename as well as the last name.