Omar Derdour (), full name Abou El Kacem Omar Derdour (13 October 1913 – 19 March 2009), was an Algerian Muslim leader, nationalist, and political worker. A disciple of Abdelhamid Ben Badis, he was active in the Islamic reformation of Algeria and the Algerian War of Independence. He directed the Friends of the Manifesto and Liberty Party's (in French: Amis du Manifeste et de la Liberté, AML) Federation in Constantine, and was a member of the Central Committee and Deputy of the Constantine region from 1947 to 1951.