GENTILLY, a town of France, in the department of the Seine, is situated on the Bièvre, a short distance south of the fortifications of Paris. Its manufactures include biscuits, soap, vinegar, mustard, wax candles, buttons, leather, and pottery wares. It possesses a church of the 13th century, a lunatic asylum, a convent, a monastery, and several charitable institutions. The population in 1876 was 10,378.