Surname Льюнг (Ljung 
, Льюнг 
) , throughout the world, is quite a rare family name. The cognomen Льюнг is characteristic of Northern Europe, particularly Sweden, where it is quite a common surname, Finland, where it is quite a rare surname, and Norway. Not in comparison with a country's population, this name is the most popular in Sweden, the United States, and Finland. Very seldom, Льюнг is the forename as well as the last name.