Melville Island (Northwest Territories and Nunavut) Melville Island (Northwest Territories and Nunavut) Melville Island is an uninhabited island of the Canadian Arctic Archipelago with an area of . It is the 33rd largest island in the world and Canada's eighth largest island. Melville Island is shared by the Northwest Territories, which is responsible for the western half of the island, and Nunavut, which is responsible for the eastern half. The border runs along the 110th meridian west. The mountains on Melville Island, some of the largest in the western Canadian Arctic, reach heights of . There are two subnational pene-exclaves that lie west of the 110th
Nunavut and all of the islands in Hudson Bay, James Bay, and Ungava Bay, including the Belcher Islands, all of which belonged to the Northwest Territories from which Nunavut was separated. This makes it the fifth-largest subnational entity (or administrative division) in the world. If Nunavut were a country, it would rank 15th in area. Nunavut has long land borders with the Northwest Territories on the mainland and a few Arctic islands, and with Manitoba to the south of the Nunavut mainland; it also meets Saskatchewan to the southwest at a quadripoint). Through its small satellite territories in the southeast, it