Surname ยืนยงค์ (ยืนยงค์ 
, Yeunyong 
) , globally, is quite a rare family name. The cognomen ยืนยงค์ is characteristic of Thailand, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, ยืนยงค์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ยืนยงค์ | Thailand |
| Yeunyong | United States, Thailand |