Surname Butphromviharn (Butphromviharn 
) , in the world, is a rare last name. The last name Butphromviharn is habitual in South-eastern Asia, particularly Laos, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Butphromviharn | Laos |
Simai, Viengsamai, and Thongsavanh