Paris-Sud University (French: Université Paris-Sud), also known as University of Paris — XI, is a French research university distributed among several campuses in the southern suburbs of Paris including Orsay, Cachan, Châtenay-Malabry, Sceaux and Kremlin-Bicêtre campuses. The main campus is located in Orsay (48.699890°N 2.173309°E). This university is a member of the UniverSud Paris and a constituent university of the federal University of Paris-Saclay.