Family name Bunthorn (Bunthorn 
) , throughout the world, is a very rare surname. The surname Bunthorn is habitual in Cambodia, where it is a rare surname, Malaysia, where it is a very rare surname, and the United States, where it is an extremely rare surname. More frequently, Bunthorn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bunthorn | Australia, Cambodia, Malaysia, Thailand, United States |