Cognomen Эргюн (Ergün 
, Ergun 
, Эргюн 
) , across the world, is a common last name. The cognomen Эргюн is habitual in Turkey, where it is a common surname, Cyprus, where it is quite a rare surname, and Belgium. Not in comparison with a country's population, it most frequently occurs in Turkey, Germany, and France. Likewise, Эргюн is the forename as well as the last name.