Pierre-Marie-Maurice-Henri, marquis de Ségur (13 February 1853 in Paris – 13 August 1916 in Poissy) was a French writer and historian, elected a member of the Académie française in 1907. He was the eldest son of , and Cécile Cuvelier; and thus the grandson of Sophie Rostopchine, Comtesse de Ségur.
Works Le maréchal de Ségur, 1895 La dernière des Condé, 1899 Jeunesse du maréchal de Luxembourg, 1900 Gens d'autrefois, 1903 Parmi les cyprès et les lauriers, 1912
References Notice biographique de l'Académie française