Cognomen สิริยงค์ (สิริยงค์ 
) , worldwide, is an extremely rare family name. The family name สิริยงค์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, สิริยงค์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สิริยงค์ | Thailand |