The Queen Charlotte Islands or Haida Gwaii are an archipelago off the north-west coast of British Columbia, Canada, consisting of two main islands: Graham Island in the North, and Moresby Island in the south.

The islands are separated from the British Columbia mainland on the east by the Hecate Strait. They are separated from Alaska on the north by the Dixon Entrance and from Vancouver Island on the south by the Queen Charlotte Sound.

Some of the land, including the homelands of the Haida people, is protected as Gwaii Haanas National Park Reserve and Haida Heritage Site . The islands thus home to much wildlife, including many bears and the ermine haidarum subspecies of stoat. They are a popular destination for adventurous tourists.

Haida Gwaii is the site of Kiidk'yaas, a rare golden spruce sacred to the Haida, which was cut down in 1997 but is now being replaced with a young tree grown from cuttings.

The archipelago was visited in 1774 by Juan Pérez and in 1778 by Capt. James Cook. In 1787 the islands were surveyed by Capt. George Dixon. The islands were named by Capt. Dixon after one of his ships, the Queen Charlotte, which was named after Queen Charlotte, wife of King George III of the United Kingdom.

The archipelago seems to have escaped much of the glaciation of the last Ice Age. That, and its subsequent isolation from the mainland, has produced what some call the "Galapagos of the North", a unique biological zone with many unusual animals and plants. Its climate, like that of the rest of the British Columbia and Alaskan coast in the area, is moderated by the Kuroshio Current, and features considerable precipitation and relatively mild temperatures year round.