Last name Yunn (Yunn 
, หยุน ) , across the world, is quite a rare cognomen. The last name Yunn is characteristic of South-eastern Asia, particularly Malaysia, where it is quite a rare surname, Myanmar, and Singapore, where it is a rare surname. Not in comparison with a country's population, it is commonest in South-eastern Asia, particularly Malaysia, Myanmar, and Indonesia. Likewise, Yunn is the forename as well as the last name.