Fermanagh, an inland county of Ireland, province of Ulster, bordering on the counties Donegal, Tyrone, Monaghan, Cavan, and Lei-trim; area, 714 sq. m.; pop. in 1871, 92,688. It lies almost wholly in the basin of Lough Erne, which divides it lengthwise into two nearly equal portions. Its S. W. part is mountainous, and the N. E. part rises into steep hills. The soil is as varied as the surface, but except a wide belt in the south is not remarkably fertile. The productions are oats, barley, wheat, flax, potatoes, turnips, and hay. Cattle are bred on the high grounds, and butter, eggs, etc, are exported. Limestone, marl, potter's clay, and small quantities of coal and iron, are the chief mineral products. Timber is more abundant than in most Irish counties, but is grown principally on the large estates, many parts of the county having a desolate appearance. There are no important manufactures, and few large towns; those worthy of notice are Enniskillen, Lisnaskea, and Lowtherstown.