Surname บุญทัน (บุญทัน 
, Boontan 
, Bunthan 
) , in all the world, is quite a rare last name. The surname บุญทัน is characteristic of Thailand, where it is quite a rare surname, Bahrain, and Cambodia, where it is a rare surname. More frequently, บุญทัน is the forename as well as the last name.