Mansel Island (Inuktitut: Pujjunaq), a member of the Arctic Archipelago, is an uninhabited island in Qikiqtaaluk Region, Nunavut.

It is located in Hudson Bay off Quebec's Ungava Peninsula.

[2] At 3,180 km2 (1,230 sq mi) in size, it is the 159th largest island in the world, and Canada's 28th largest island.

Its topography features a gently undulating limestone lowland with elevations not exceeding 100 m. Mansel Island was named in 1613 by Sir Thomas Button[3] after Vice-Admiral Sir Robert Mansell.