Surname Sahwangsaeng (Sahwangsaeng 
) , all over the world, is an extremely rare last name. The family name Sahwangsaeng is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sahwangsaeng | Thailand |
Salouikate, Siriboon, and Teerakit