Buncrana, a market-town and watering-place of Co. Donegal, Ireland, in the north parliamentary division on the east shore of Lough Swilly, on the Londonderry & Lough Swilly & Letterkenny railway. Pop. (1901) 1316. There is a trade in agricultural produce, a salmon fishery, sea fisheries and a manufacture of linen. The town is beautifully situated, being flanked on the east and south by hills exceeding 1000 ft. The picturesque square keep of an ancient castle remains, but the present Buncrana Castle is a residence erected in 1717. The golf-links are well known.