Cognomen Tunian (Тунян 
, Tunian 
) , in all the world, is a rare surname. The surname Tunian is characteristic of Papua New Guinea, where it is quite a rare surname, Lithuania, and Armenia, where it is a rare surname. Measured by absolute frequency, the name is most common in Russia, Papua New Guinea, and Indonesia. Also, Tunian is the forename as well as the last name.