Cognomen สิริแสนยากร (สิริแสนยากร 
) , all over the world, is a very rare last name. The family name สิริแสนยากร is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, สิริแสนยากร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สิริแสนยากร | Thailand |