Surname Себаст'Ян (Себаст'Ян 
) , across the world, is an extremely rare last name. The cognomen Себаст'Ян is habitual in Eastern Europe, particularly Ukraine, where it is an extremely rare surname. More frequently, Себаст'Ян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Себаст'Ян | Ukraine |