Henri-Jean Guillaume "Henri" Martin (5 August 1860 – 12 November 1943) was a French painter. Elected to the Académie des Beaux-Arts in 1917, he is known for his early 1920s work on the walls of the Salle de l'Assemblée générale, where the members of the Conseil d'État meet in the Palais-Royal in Paris. Other notable institutions that have featured his Post-Impressionist paintings in their halls through public procurement include the Élysée Palace, Sorbonne, Hôtel de Ville de Paris, Palais de Justice de Paris, as well as Capitole de Toulouse, although the Musée des Beaux-Arts de Bordeaux and Musée des Augustins also have sizeable public collections.