Surname Іл'Яна (Іл'Яна 
) , all over the world, is an extremely rare last name. The surname Іл'Яна is habitual in Eastern Europe, particularly Ukraine, where it is an extremely rare surname. Also, Іл'Яна is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Іл'Яна | Ukraine |