Family name اولسن (Olsen 
, Killi 
, Olesen ) , around the globe, is a widespread cognomen. The last name اولسن is habitual in Greenland, where it is a prevalent surname, Denmark, where it is a widespread surname, and Norway (explore the name in all countries). In absolute terms, the name is most common in the United States, Denmark, and Norway. Much less frequently, اولسن is the forename as well as the last name.