Last name เอิร์ล (Oen 
, Ealr , เอิร์ล) , in the entire world, is quite a common family name. The last name เอิร์ล is habitual in Norway, where it is quite a rare surname, Indonesia, and Singapore, where it is a rare surname. Measured by absolute frequency, the name is most common in Indonesia, the United States, and Norway. Much less frequently, เอิร์ล is the forename as well as the last name.