Cognomen สว่างสวัสดิ์ (สว่างสวัสดิ์, Sawangsawal, Sawangsawat) , in the entire world, is an extremely rare surname. The surname สว่างสวัสดิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sawaengsawat | Thailand |