MONTMORILLON, a town of France, capital of an arrondissement of the same name, in the department of Vienne, is situated on both sides of the Gartempe, 27 miles S.E. of Poitiers. It was formerly a strong place, and still contains the remains of an old castle, part of which is now used as an ecclesiastical college. The town possesses a few paper-mills and bleachfields, and it has some trade in cattle. Pop. 4400.