Cognomen Dullaj (Dullaj 
) , in all the world, is a very rare last name. The last name Dullaj is habitual in Albania, where it is quite a rare surname, Switzerland, where it is a rare surname, and Germany, where it is an extremely rare surname. Very seldom, Dullaj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dullaj | Albania, Switzerland, India, Germany |