| Stefansson Island | |
| Pushpin Map: | Canada Nunavut#Canada |
| Location: | Viscount Melville Sound |
| Coordinates: | 73.3333°N -150°W |
| Archipelago: | Arctic Archipelago |
| Area Km2: | 4463 |
| Highest Mount: | unnamed |
| Elevation M: | 256 |
| Country: | Canada |
| Country Admin Divisions Title: | Territory |
| Country Admin Divisions: | Nunavut |
| Country Admin Divisions Title 1: | Region |
| Country Admin Divisions 1: | Kitikmeot |
| Population: | 0 |
Stefansson Island is an uninhabited island in the Arctic Archipelago in the Kitikmeot Region of Nunavut, Canada. It has a total area of 4463km2, making it the 128th largest island in the world, and Canada's 27th largest island. The island is located in Viscount Melville Sound, with M'Clintock Channel to the east. It lies just off Victoria Island's Storkerson Peninsula, separated by the Goldsmith Channel. Stefansson Island's highest mount is 256m (840feet).[1] A weather station, at 73.7656°N -105.2956°W, is located on the northern part of the island as part of an automated weather station array operated by Environment and Climate Change Canada in the Arctic.[2] The first European sighting of the island was in 1917 by Storker T. Storkerson who was travelling with Canadian explorer Vilhjalmur Stefansson (1879-1962), for whom the island was named.[3]