Cognomen ยวนยง (ยวนยง 
) , around the globe, is an extremely rare surname. The cognomen ยวนยง is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, ยวนยง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ยวนยง | Thailand |