Cognomen Youngyu (Youngyu 
) , throughout the world, is a very rare last name. The last name Youngyu is habitual in Thailand, where it is a very rare surname, and China, where it is an extremely rare surname. Very seldom, Youngyu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Youngyu | China, United States, Canada, Thailand |