Surname บุญพรรัตน์ (บุญพรรัตน์ 
, Bunpornrat ) , in the entire world, is a very rare family name. The last name บุญพรรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, บุญพรรัตน์ is the forename as well as the last name.