The Great Northern Peninsula is the largest and longest peninsula of Newfoundland, Canada, approximately 225 km long and 80 km wide at its widest point and encompassing an area of 17,483 km². It is defined as that part of Newfoundland from Bonne Bay northwards around Cape Norman and Cape Bauld and thence southwards to the head of White Bay, bounded by the Gulf of St. Lawrence on the west, the Strait of Belle Isle on the north and the Labrador Sea and White Bay on the east.