Akimiski Island is the largest island in James Bay (a southeasterly extension of Hudson Bay), Canada, which is part of the Qikiqtaaluk Region of the territory of Nunavut. It has an area of 3,001 km² (1,159 sq mi), making it the 163rd largest island in the world, and Canada's 29th largest island. Akimiski Island is only 19 km (12 mi) from the province of Ontario.