Surname อิ่มอุ่น (Imduen 
, อิ่มอุ่น, Oumsanong ) , worldwide, is a very rare last name. The last name อิ่มอุ่น is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, อิ่มอุ่น is the forename as well as the last name.