The Diocese of The Arctic is a diocese of the Ecclesiastical Province of Rupert's Land of the Anglican Church of Canada. It is by far the largest of the thirty dioceses in Canada, comprising almost 4,000,000 km2 (1,500,000 sq mi), or one-third the land mass of the country. As the name indicates, the diocese encompasses the Arctic region of Canada including the entirety of the Northwest Territories, Nunavut, and the Nunavik region of northern Quebec. The see city is Iqaluit, Nunavut, and the diocese's nearly 34,000 Anglicans are served by 48 parishes. The administrative offices of the diocese are located in Yellowknife, Northwest Territories.

Iqaluit is the capital of the Canadian territory of Nunavut. It is the territory's largest community and its only city. It was known as Frobisher Bay from 1942 to 1987, after the large bay on the coast on which the city is situated. The northernmost city in Canada, its traditional Inuktitut name was restored in 1987.