Foulney Island is a low-lying grass and shingle area 1 mile (1.6 km) to the south-east of Roa Island, off the southern tip of the Furness Peninsula in Cumbria, England. Foulney Island is one of the Islands of Furness in Morecambe Bay, northern England. For local government purposes the island is in the borough of Barrow-in-Furness. It has an area of about 40 acres (16 ha). In earlier times it was known as Fowle Island.