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