Family name Ylien (Ylien 
) , around the world, is an extremely rare surname. The cognomen Ylien is habitual in Finland, where it is a very rare surname, Peru, where it is an extremely rare surname, and Venezuela. Likewise, Ylien is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ylien | Venezuela, Brazil, United States, Peru, Finland |