Surname Дален (Dalen 
, Dahlen 
, Дален 
) , all over the world, is a common cognomen. The surname Дален is habitual in Norway, where it is quite a common surname, Netherlands, and Suriname. Measured by absolute frequency, it is commonest in Netherlands, Norway, and the United States. Much less frequently, Дален is the forename as well as the last name.