Cognomen หรุ่ม (Rum 
, หรุ่ม) , across the world, is quite a common surname. The surname หรุ่ม is habitual in Indonesia, where it is quite a rare surname, Malaysia, and Estonia. Measured by absolute frequency, it is the most numerous in Indonesia, Malaysia, and India. Likewise, หรุ่ม is the forename as well as the last name.