Pierre Jean Baptiste Louis Dumont (29 March 1884, 5th arrondissement, Paris[1] – 8 April 1936, Rouen) more commonly known as Pierre Dumont, was a French painter of the Rouen School and a student of Joseph Delattre. Dumont founded the Groupe des XXX (1907), and along with Robert Antoine Pinchon, Yvonne Barbier, and Eugène Tirvert, founded the Société Normande de Peinture Moderne (1909). In 1910-11 Dumont lived at the Le Bateau-Lavoir becoming friends with Juan Gris, Max Jacob and Guillaume Apollinaire. He subsequently played a crucial role in the organization of the Salon de la Section d'Or at the Galerie La Boétie in Paris, October 1912.[2][3][4]