Surname Inun (Inun 
, อีนูน) , throughout the world, is quite a rare last name. The cognomen Inun is characteristic of South-eastern Asia, particularly Indonesia, where it is a rare surname, Malaysia, and Philippines, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Indonesia, Malaysia, and India. Also, Inun is the forename as well as the last name.