Nunatsiavut (/nuːˈnɑːtsiəvʊt/; Inuktitut: ᓄᓇᑦᓯᐊᕗᑦ) is an autonomous area claimed by the Inuit in Newfoundland and Labrador, Canada. The settlement area includes territory in Labrador extending to the Quebec border. In 2002, the Labrador Inuit Association submitted a proposal for limited autonomy to the government of Newfoundland and Labrador. The constitution was ratified on December 1, 2005, at which time the Labrador Inuit Association ceased to exist, and the new Government of Nunatsiavut was established, initially being responsible for health, education and cultural affairs. It is also responsible for setting and conducting elections, the first of which was executed in October 2006. An election for the ordinary members of the Nunatsiavut Assembly was held on May 4, 2010. Its incumbent president is Johannes Lampe who assumed office in 2016.

In Inuttitut/Inuktitut, Nunatsiavut means "Our Beautiful Land". This name was ratified by the Labrador Inuit Constitution and passed by the Labrador Inuit Association in 2002. A primary objective of autonomy is for the preservation of the Inuit culture and language, as well as the environment through environmental stewardship.

Nunatsiavut is counted in the census as Division 11.

The Labrador Inuit Association had filed a land claim for portions of Labradorian land in 1977. In 1988, the Labrador Inuit Association, the government of the province of Newfoundland, and the government of Canada began negotiations based on the land claim. An agreement-in-principle was achieved in 2001, and on May 26, 2004, the agreement was ratified by over 75% of eligible voters subject to the land claim.

On January 22, 2005, the Inuit of Nunatsiavut signed the Labrador Inuit Lands Claims Agreement with the federal and provincial governments covering 72,520 km² (28,000 sq mi) of land, including the entire northern salient of Labrador north of Nain as well as a portion of the Atlantic coast south of there. The agreement also includes 44,030 km² (17,000 sq mi) of sea rights. Although the Inuit will not own the whole area, they were granted special rights related to traditional land use, and they will own 15,800 km² (6,100 sq mi) designated Labrador Inuit Lands. The agreement also establishes the Torngat Mountains National Park in the northern area of the land claim.

The Labrador Inuit Lands Claims Agreement is a treaty between the Inuit of Labrador, the provincial government of Newfoundland and Labrador, and the federal government of Canada, that is constitutionally protected under the aboriginal and treaty rights of Indigenous peoples in Canada granted by section 35 of the Constitution Act, 1982.

The self-governance agreement included a transfer of $130 million from the federal government in compensation for the forced relocation of the Inuit in the 1950s; $120 million to establish self-government; royalty payments from the provincial government for resource extraction; and land, mineral, and marine rights. Unspecified benefits for Inuit in Labrador not within the settlement area were also part of the agreement.

The agreement was ratified by the Labrador Inuit, the General Assembly of Newfoundland and Labrador, and the Parliament of Canada, where it received Royal Assent on June 23, 2005.