or NEDD (anc. Nidum), a parliamentary and municipal borough and market-town of South Wales, in the county of Glamorgan, on the left bank of the river of the same name, 7 miles E.N.E. of Swansea, 85 W.N.W. of Cardiff, and 208 W. by N. of London by railway. It extends along the edge of the river; and though neither well nor regularly built, it has some broad, well-paved streets. In the middle of the market-place stands a town-hall, built in 1837. The parish church is a large and ancient structure, with a square embattled tower; and there are several other churches. The town has a philosophical society, mechanics' institution, library, museum, and several almshouses. There are extensive copper and iron works, and the trade is considerable. The River Neath, which is here crossed by a bridge, is navigable for vessels of 300 or 400 tons up to the town, where there is a harbour with convenient docks. The principal articles exported are coal, iron, copper, tin, oak, and bricks; while copper and iron ore, corn, flour, timber, and other goods, are imported from foreign countries. Near the town are the remains of an old castle; and about a mile off, on the road to Swansea, are those of Neath Abbey; but very few traces now remain of the former splendour of either of these edifices. The borough is governed by a mayor, 4 aldermen, and 12 councillors; and unites with Swansea in returning a member to Parliament. The market-day is Wednesday; and three annual fairs are held. Pop. (1851) 3841.