Last name เอิ่น (Oen 
, เอิ่น) , all around the world, is quite a common surname. The last name เอิ่น is characteristic of Norway, where it is quite a rare surname, Indonesia, and Singapore, where it is a rare surname. In absolute terms, this name is the most popular in Indonesia, the United States, and Norway. Very seldom, เอิ่น is the forename as well as the last name.