Cognomen ศิริวัย (ศิริวัย 
) , across the world, is a very rare surname. The cognomen ศิริวัย is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, ศิริวัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ศิริวัย | Thailand |