Family name Айун (Ayun 
, Айун 
) , globally, is quite a common cognomen. The family name Айун is characteristic of Indonesia, where it is quite a rare surname, Malaysia, and Saudi Arabia, where it is a rare surname. Not in comparison with a country's population, it is commonest in South-eastern Asia, particularly Indonesia, Malaysia, and Philippines. Likewise, Айун is the forename as well as the last name.