Surname สมุน (Samun 
, สมุน , Smun 
) , throughout the world, is quite a rare family name. The family name สมุน is characteristic of Estonia, where it is quite a rare surname, Qatar, where it is a rare surname, and Malaysia. Not in comparison with a country's population, it is the most numerous in Indonesia, India, and Bangladesh. More frequently, สมุน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Samun | Bangladesh, Malaysia, Thailand, India, Indonesia |
| สมุน | Thailand |
| Smun | United States, Nigeria, Malaysia, Thailand, India |