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Family name Carlsen (Carlsen
, Карлсен
) , in the entire world, is a common cognomen. The cognomen Carlsen is characteristic of Northern Europe, particularly Denmark, where it is a common surname, Norway, where it is quite a common surname, and Iceland, where it is quite a rare surname. Measured by absolute frequency, it is the most numerous in Denmark, the United States, and Norway. Much less frequently, Carlsen is the forename as well as the last name.