Cognomen 达姆 (Dam 
, Damm 
, Dahm 
) , throughout the world, is a widespread family name. The last name 达姆 is habitual in Netherlands, where it is a common surname, Denmark, where it is quite a common surname, and Luxembourg (explore the name in all countries). Measured by absolute frequency, it is the most numerous in India, Germany, and Netherlands. Much less frequently, 达姆 is the forename as well as the last name.