Last name สุวาสน์ (สุวาสน์ 
) , around the world, is an extremely rare family name. The last name สุวาสน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, สุวาสน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สุวาสน์ | Thailand |