Family name 德朗 (Delong 
, 德朗 , Drown 
) , around the world, is a common last name. The surname 德朗 is habitual in the United States, where it is quite a rare surname, Canada, and Jamaica. Measured by absolute frequency, it is the most numerous in the United States, Canada, and France. Very seldom, 德朗 is the forename as well as the last name.