|Area||271 km2 (105 sq mi)|
Brevoort Island is a small, uninhabited island located in the Labrador Sea off the eastern coast of Baffin Island in the Qikiqtaaluk Region of northern Canada's territory of Nunavut. The island is a member of the Arctic Archipelago and lies north of Cape Murchison, opposite the Cumberland Peninsula.
Brevoort Island, with an area of 271 km2 (105 sq mi), is 46 km (29 mi) in length, and 5–7 km (3.1–4.3 mi) in width. It has a hilly interior, mostly composed of granite.
The island is the home of BAF-3, a Distant Early Warning Line and now a North Warning System site. It has a non-radar, rearward communications (relay) station.