Jemmapes, a large village and commune of Belgium, province of Hainault, and arrondissement of Mons, 3 miles W. of the town of that name. It stands on the River Haine, and on the canal between Mons and Conde. In the vicinity are limestone quarries and coal-mines. Here, in 1792, the French, under Dumouriez, gained a decisive victory over the Austrians. Under French rule Jemmapes gave name to a department which was nearly co-extensive with the present province of Hainault. Pop. of commune (1851) 8387.