Family name ムルン (Murun 
, Murn 
, ムルン) , worldwide, is quite a rare cognomen. The surname ムルン is habitual in Slovenia, where it is quite a common surname, Mongolia, where it is quite a rare surname, and Bosnia and Herzegovina. In absolute terms, this name is the most popular in Slovenia, the United States, and Mongolia. Also, ムルン is the forename as well as the last name.