Last name ยงยิ่งศักดิ์ถาวร (ยงยิ่งศักดิ์ถาวร, Yongyingsaktavorn 
, Yongyingsakthavorn 
) , in the entire world, is a very rare family name. The surname ยงยิ่งศักดิ์ถาวร is characteristic of Cambodia, where it is a very rare surname, Thailand, and China, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Yongyingsaktavorn | China, Cambodia |
| Yongyingsakthavorn | Thailand |