Surname デュプイ (Dupuis 
, デュプイ) , throughout the world, is a common family name. The last name デュプイ is characteristic of Dominica, where it is quite a common surname, Reunion, and France (explore the name in all countries). Not in comparison with a country's population, it is commonest in France, Canada, and the United States. Much less frequently, デュプイ is the forename as well as the last name.