Moresby Island (Haida: Gwaii Haanas) is a large island (3,399.39 km2 or 1,312.51 sq mi) that forms part of the Haida Gwaii archipelago (formerly known as Queen Charlotte Islands) in British Columbia, Canada, located at .
Gwaii Haanas (Haida)
|Area||3,399.39 km2 (1,312.51 sq mi)|
|Regional District Electoral Area||North Coast Regional District Electoral Area E|
|Electoral Area Director||Evan Putterill|
|Pop. density||0.10/km2 (0.26/sq mi)|
Gwaii Haanas National Park Reserve and Haida Heritage Site includes Moresby and other islands. The island, together with numerous nearby smaller islands and islets in the southern archipelago, is defined by Statistics Canada as Skeena-Queen Charlotte E (Now North Coast Regional District Area E), with a population of 340 as of the 2016 census. Almost all of its population resided in the unincorporated community of Sandspit, on the northeast corner of Moresby. The total land area of the electoral area is 3,399.39 km2 (1,312.51 sq mi).
On October 27, 2012, an earthquake of magnitude 7.7 (the strongest earthquake in Canada since the 1949 Queen Charlotte Islands earthquake) was epicentred at a depth of 17.5 kilometres (10.9 miles) under the island.