The Tsimshian (/ˈsɪmʃiən/; Tsimshian: Ts'msyen, lit. 'Inside the Skeena River') are an Indigenous people of the Pacific Northwest Coast of North America. Their communities are mostly in coastal British Columbia in Terrace and Prince Rupert, and Metlakatla, Alaska on Annette Island, the only reservation in Alaska.
The Tsimshian estimate there are 45,000 Tsimshian people and approximately 10,000 members are federally registered in eight First Nations communities: Kitselas, Kitsumkalum, Gitxaala, Gitga'at, Kitasoo, Lax Kw'Alaams, and Metlakatla. The latter two communities resulted in the colonial intersections of early settlers and consist of Tsimshian people belonging to the 'nine tribes.' The Tsimshian are one of the largest First Nations peoples in northwest British Columbia. Some Tsimshian migrated to the Annette Islands in Alaska, and today approximately 1,450 Alaska Tsimshian people are enrolled in the federally recognized Metlakatla Indian Community, sometimes also called the Annette Island Reserve. The Tsimshian honor the traditional Tlingit name of Taquan for this recent location.