Family name Илен (Ilene 
, Ilen , Ylen 
) , in all the world, is quite a rare last name. The family name Илен is habitual in Finland, where it is quite a rare surname, Belgium, where it is a rare surname, and Venezuela. Measured by absolute frequency, it most frequently occurs in Indonesia, Finland, and Philippines. More frequently, Илен is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ilen, Ilene | Brazil, Indonesia, United States, Philippines, India |
| Ylen | Brazil, Venezuela, United States, Philippines, Finland |
| Илен | Russia |
Стивастаров, Зайдель, and Дашковский