Last name Yun-Yong (Yun-Yong 
) , worldwide, is an extremely rare cognomen. Much more frequently, Yun-Yong is the forename as well as the last name. Parts of the name also exists independently as a first name Yun, and a first name Yong.
| VARIANT | COUNTRY |
|---|---|
| Yun-Yong | United States |
Yoon-Young, ユンヨン, and 윤영