Cognomen ບນທນ (ບນທນ 
) , in all the world, is a rare surname. The last name ບນທນ is habitual in South-eastern Asia, particularly Laos, where it is quite a rare surname. More prevalently, ບນທນ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ບນທນ | Laos |