Cognomen Yungsuk (Yungsuk 
) , all over the world, is a very rare family name. The cognomen Yungsuk is characteristic of Thailand, where it is a very rare surname, Cambodia, and China, where it is an extremely rare surname. Likewise, Yungsuk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yungsuk | China, United States, Cambodia, Thailand |