Cognomen Дюшан (Duchamp 
, Дюшан 
) , in the world, is quite a rare family name. The cognomen Дюшан is habitual in France, where it is quite a rare surname, Ivory Coast, and Belgium, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in France, Ivory Coast, and the United States. Much less frequently, Дюшан is the forename as well as the last name.