Holy Island is the name given to a number of small islands in Britain and Ireland. The largest is Holy Island, or Lindisfarne, off the coast of Northumberland in northern England. There is a Holy Island at the mouth of Lamlash Bay, on Arran Island, in the Firth of Clyde; one in Lough Derg, in County Clare; and one in the Lakes of Killarney, in County Kerry.