Duhamel's library was dispersed at two sales in Lyon in 1921 and 1922. In honor of Duhamel, a street in Grenoble bears his name, as does the gap separating the Croix de Belledonne from the central peak of the Belledonne range, and one of the side peaks in the Massif des Écrins (the Pyramide Duhamel). Duhamel appears as a character in the novel Le roman de Gaspard de la Meije by Isabelle Scheibli.