Surname สวัสดิ์วงษา (สวัสดิ์วงษา 
) , in all the world, is an extremely rare last name. The cognomen สวัสดิ์วงษา is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| สวัสดิ์วงษา | Thailand |