Gabriel Édouard Xavier Dupont was a French composer, known for his operas and chamber music.
Dupont was born in Caen. Following after his father who was a teacher at the Malherbe secondary school and the organist at the Church Saint-Étienne in his home town, Dupont began his studies at the conservatory of music and declamation at the age of 15. There he studied harmony with Antoine Taudou, descant with André Gedalge, and composition with Jules Massenet. In 1895, he was given instruction on the organ by Alexander Guilmant. Between 1897 and 1903, he studied composition with Charles-Marie Widor.
Dupont's brothers also had artistic careers. Maurice, curator of the Guimet Museum, was an Oriental expert and man of letters. Robert (1874–1949) was a landscaper for Sarthe and Brittany, as well as an official painter of the town halls of Paris.
In 1901, while performing his military service, Dupont competed for the Rome Prize. He won second prize, behind André Caplet but ahead ofMaurice Ravel. He was also named laureate of the Sonzogno competition for his opera La Cabrera, which was later presented with success at La Scala and then at the Théâtre national de l'Opéra-Comique in 1905.