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