Throughout the world, Duplus (Doble 
, Dobel , Dublu 
) is a rare principally masculine, but very seldom feminine given name. The first name Duplus is characteristic of Puerto Rico, where it is quite a rare masculine name, the Democratic Republic of the Congo, where it is a rare boy's name, and the Dominican Republic. In absolute terms, it most frequently occurs in the Democratic Republic of the Congo, India, and Indonesia. More frequently, Duplus is the last name as well as the forename.