Last name สมปลอง (สมปลอง 
) , in the entire world, is a very rare surname. The cognomen สมปลอง is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, สมปลอง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สมปลอง | Thailand |