Gabriel Dupuy (5 February 1840, Angouleme – 5 February 1913, Bordeaux) was a French entomologist who specialised in Lepidoptera. Depuy taught at École nationale d'Agriculture de Montpellier (Hérault). He studied the butterflies and moths of France notably Charente, Deux-Sèvres, Dordogne and Gironde. He was a Member of the Société Entomologique de France.