Jacques Ancel (July 22, 1879, Parmain, Val-d'Oise – 1943) was a French geographer and geopolitician. He is author of several books, including Peoples and Nations of Balkans: political geography (1926) and Geopolitics (1936). He taught at the University of Paris' Institute of Higher International Studies, and was a corresponding member of the Romanian Academy and of other scientific forums. He was a knight of the Légion d'honneur.