Surname 楊森 (Janssen 
, Youngson 
, 楊森 
) , worldwide, is a widespread last name. The surname 楊森 is habitual in Netherlands, where it is a common surname, Belgium, where it is quite a common surname, and Aruba (explore the name in all countries). In absolute terms, it is commonest in Netherlands, Germany, and the United States. Very seldom, 楊森 is the forename as well as the last name.