Louis Emile Marie Madelin (8 May 1871 – 18 August 1956) was a French historian (specialising in the French Revolution and First French Empire) and a Republican Federation deputy for Vosges from 1924 to 1928. He is buried at the Cimetière de Grenelle.
Madelin was born in Neufchâteau (Vosges). Studying history at the École des chartes, he became a member of the École française de Rome then a professor at the faculté des lettres de Paris. He married in 1898, having four children by his first wife and on her death remarrying in 1909 to Marthe Clavery. During the First World War he was conscripted in 1914, becoming a sous-lieutenant and information officer before being demobbed in 1918 and receiving the Croix de guerre.
Elected to the Académie française in 1927 (replacing Robert de Flers in seat 5), in Lorraine he became president of the Association des Amis du berceau de Jeanne d'Arc on the death of Lyautey - the Association organised mass demonstrations in Domrémy from 1937 to 1939 under the aegis of the Compagnons de Jeanne d'Arc. In 1948 he participated in the creation of the Comité pour la Libération du Maréchal Pétain.