Surname Юыен (Yuyen 
, Juyen 
, Юыен 
) , around the world, is quite a rare cognomen. The family name Юыен is habitual in Taiwan, where it is quite a rare surname, Thailand, and Malaysia, where it is a rare surname. Much less frequently, Юыен is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yuyen | Thailand, Indonesia, Taiwan, Philippines, Malaysia |
| Juyen | Thailand, United States, Taiwan, Philippines, India |
| Юыен | Russia |
| Iuyen | United States |