Family name אולסן (Olsen 
, Olssen 
, אולסן 
) , around the globe, is a widespread surname. The cognomen אולסן is characteristic of Greenland, where it is a prevalent surname, Norway, where it is a widespread surname, and Denmark (explore the name in all countries). Measured by absolute frequency, it is commonest in the United States, Norway, and Denmark. Much less frequently, אולסן is the forename as well as the last name.