Cognomen Ýooñ (Ýooñ 
) , around the globe, is a very rare last name. The family name Ýooñ is characteristic of South-eastern Asia, particularly Myanmar, where it is a rare surname. More prevalently, Ýooñ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ýooñ | Myanmar |