Olivier Le Cour Grandmaison (born 19 September 1960), is a French politist and author whose work chiefly centres on colonialism.
He is best known for his book Coloniser, Exterminer - Sur la guerre et l'Etat colonial.
Le Cour Grandmaison is a professor of political science at the Évry-Val d'Essonne University, and a teacher at the Collège International de Philosophie.
He is president of the October 17, 1961 Association Against Oblivion, which advocates official recognition for the crimes committed by the Fifth Republic during the 1961 Paris massacre.