Last name 佛森 (佛森 
, Fossum 
) , all over the world, is quite a common family name. The cognomen 佛森 is habitual in Northern Europe, particularly Norway, where it is quite a common surname, Aland Islands, and Sweden, where it is quite a rare surname. In absolute terms, it most frequently occurs in Norway, the United States, and Canada. Very seldom, 佛森 is the forename as well as the last name.