The Courcelles massacre (French: Tuerie de Courcelles), sometimes known as the Rognac massacre (Tuerie du Rognac), involved the killing of 27 civilians in a number of separate instances by a collaborationist militia associated with the Rexist Party in German-occupied Belgium during World War II. The killings occurred on 17–18 August 1944 near Courcelles, a suburb of the industrial city of Charleroi in Hainaut Province, shortly before the Liberation of Belgium in revenge for the killing of a Rexist official by the Belgian Resistance.