Last name ขุนบุญ (Khunbun 
, ขุนบุญ , Khun Boon 
) , across the world, is a very rare family name. The family name ขุนบุญ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, and Malaysia, where it is an extremely rare surname. Very seldom, ขุนบุญ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khunbun | Thailand, India |
| ขุนบุญ | Thailand |
| Khun Boon | Malaysia |