Last name Rahun (Rahun 
, ราฮุน ) , around the globe, is a rare surname. The family name Rahun is characteristic of South-eastern Asia, particularly Malaysia, where it is a rare surname, Indonesia, where it is a very rare surname, and Thailand, where it is an extremely rare surname. In absolute terms, this name is the most popular in Indonesia, India, and Malaysia. More frequently, Rahun is the forename as well as the last name.