Surname ยงสวาสดิ์ (ยงสวาสดิ์ 
) , all around the world, is a very rare family name. The family name ยงสวาสดิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, ยงสวาสดิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ยงสวาสดิ์ | Thailand |