Surname ขวัญบุญบำเพ็ญ (ขวัญบุญบำเพ็ญ, Kwanbunbumpen 
) , all around the world, is a very rare family name. The family name ขวัญบุญบำเพ็ญ is habitual in Thailand, where it is an extremely rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Kwanbunbumpen | United States, Thailand |