Surname สมแปง (สมแปง 
, Sompang 
) , throughout the world, is a very rare family name. The surname สมแปง is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Likewise, สมแปง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สมแปง | Thailand |
| Sompang | United States, India, Thailand |