Surname Saiyawongsa (Saiyawongsa 
) , in the world, is a very rare last name. The surname Saiyawongsa is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Saiyawongsa | Thailand |
Chatchai, Chatsuda, Thipawan, Chatchawan, and Patcharaporn