Surname Korneliusz (Korneliusz 
, Корнелій 
, Корнелий 
) , around the world, is quite a rare last name. The last name Korneliusz is habitual in Eastern Europe, particularly Poland, where it is quite a rare surname, and Bulgaria, where it is a rare surname. Likewise, Korneliusz is the forename as well as the last name.