Surname ยงศิริ (ยงศิริ 
, Yungsiri ) , worldwide, is a rare cognomen. The family name ยงศิริ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, ยงศิริ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yungsiri, ยงศิริ | Thailand |