Family name ສມບນ (ສມບນ 
) , throughout the world, is a rare cognomen. The last name ສມບນ is habitual in South-eastern Asia, particularly Laos, where it is quite a common surname. More frequently, ສມບນ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ສມບນ | Laos |