Family name Youin (คุณ 
, Youin 
) , around the world, is a very rare cognomen. The surname Youin is characteristic of Thailand, where it is a very rare surname, Italy, and the United States, where it is an extremely rare surname. Predominantly, Youin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| คุณ | Thailand |
| Youin | Italy, United States, Thailand |
| amy youin Ivorian amateur wrestler, CI (b. 1998) |
|