Last name อิ่มบุญ (Imboon 
, Imbun 
, อิ่มบุญ) , in the world, is a rare surname. The family name อิ่มบุญ is characteristic of Malaysia, where it is a rare surname, New Zealand, where it is a very rare surname, and Thailand. Measured by absolute frequency, it is the most numerous in South-eastern Asia, particularly Malaysia, Thailand, and Philippines. Also, อิ่มบุญ is the forename as well as the last name.