Surname อุ่น (Un 
, อุ่น) , all around the world, is a common cognomen. The last name อุ่น is habitual in Macao, where it is a common surname, Malaysia, where it is quite a rare surname, and Albania. Measured by absolute frequency, this name is the most popular in Indonesia, Macao, and Malaysia. Likewise, อุ่น is the forename as well as the last name.