Family name Seng Aloun (Seng Aloun 
) , in the entire world, is quite a rare last name. The cognomen Seng Aloun is characteristic of South-eastern Asia, particularly Laos, where it is quite a common surname, and Thailand, where it is an extremely rare surname. Much less frequently, Seng Aloun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Seng Aloun | Thailand, Laos |