Last name อินนุ่น (Innun 
, อินนุ่น) , throughout the world, is a rare family name. The surname อินนุ่น is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname, Malaysia, where it is a very rare surname, and Philippines, where it is an extremely rare surname. Much less frequently, อินนุ่น is the forename as well as the last name.