The Seton Lake First Nation, a.k.a. the Seton Lake Indian Band, is a First Nations government located in the Central Interior-Fraser Canyon region of the Canadian province of British Columbia. It is a member of the Lillooet Tribal Council, which is the largest grouping of band governments of the St'at'imc people (a.k.a. the Lillooet people). Other St'at'imc governments include the smaller In-SHUCK-ch Nation on the lower Lillooet River to the southwest, and the independent N'quatqua First Nation at the farther end of Anderson Lake from Seton Portage, which is the location of three of the band's reserve communities.
The Seton Lake First Nation's offices are located at Shalalth, British Columbia, where a School District #74 public school is in operation, teaching St'at'imcets language and St'at'imc culture in addition to regular curriculum.
Chief and Councillors
Chief: Ida Mary Peter
Council Members: William Alexander, Randy James, Clifford Casper, Phyllis Peters, and Tim Peter
Social, Educational and Cultural Programs and Facilities
Seton Lake Band (in partnership with the Gold Trail School District) runs Ski'l Mountain Community School on Ski'l Mountain, Shalalth, BC. It runs a preschool program up to Grade 12, teaching local culture and language as well as the BC provincially mandated curriculum. The Rose Casper Healing Centre services the local band and community membership in areas of Social Development and Health Care. It runs several programs year round in the areas of Social Development and Community Health Care. Seton Lake Band owns and operates a gas bar offering basic vehicle maintenance services. Seton Lake Band owns and operates a shuttle passenger train which makes return trips to Shalalth's closest town, Lillooet, BC where on reserve and community members can access medical services, grocery stores, and banks.
Indian Reserves under the administration of the Seton Lake First Nation are:
- Slosh Indian Reserve No. 1, 691.1 ha., north shore of Seton Lake, extending 5.5 miles east from the western end of the lake, Population in 2006: 227  
- Slosh Indian Reserve No. 1A, 649.1 ha., above west end of Seton Lake, north of Shalalth. Population in 2006: 0  
- Silicon Indian Reserve No. 2, 46.5 ha., on north shore of Seton Lake, 7 miles southeast of Shalalth. 
- Mission Indian Reserve No. 5, 32.4 ha., west end of Seton Lake, south of and adjoining Slosh IR No. 1. Population in 2006: 51 
- Seton Lake Indian Reserve No. 5A, 350.4 ha. north of Necait 6 and Mission 5. Population in 2006: 0  
- Necait Indian Reserve No. 6, 31.9 ha., east end of Anderson Lake, both sides of the Seton River. Population in 2006: 16  
- Whitecap Indian Reserve No. 1, 27.5 ha., northwest of Seton Portage, established 1998. 
One Indian Reserve is no longer under band title:
- Seton Lake Indian Reserve No. 7, 50 ha., east side of Seton Portage, between Anderson and Seton Lakes. Established 1943, sold to the BC Electric Company in 1959. 
In addition to this parcel of land, which was transferred out of Indian Reserve as part of the Bridge River Power Project, the powerhouses and townsites associated with the project are on IR No. 1A, and there are various recreational and residential leases at Shalalth, which formerly also had lodgings, shipping companies and other services.
- Indian and Northern Affairs Canada Reserves/Settlements/Villages Detail Archived 2012-03-31 at the Wayback Machine
- Census Canada 2006 Community Profile - Slosh 1
- "Slosh Indian Reserve 1". BC Geographical Names.
- Census Canada 2006 Community Profile - Slosh 1A
- "Slosh Indian Reserve 1A". BC Geographical Names.
- "Silicon Indian Reserve 2". BC Geographical Names.
- Census Canada 2006 Community Profile - Mission 5
- Census Canada 2006 Community Profile - Seton Lake 5A
- "Seton Lake Indian Reserve 5A". BC Geographical Names.
- Census Canada 2006 Community Profile - Necait 6
- "Necait Indian Reserve 6". BC Geographical Names.
- "Whitecap 8". BC Geographical Names.
- "INAC # 00119. Seton Lake Indian Reserve 7 was established 30 September 1943 by OCPC 7608. Seton Lake Band. Seton Lake IR 7 was surrendered for sale (except Mines and Minerals) per Band Council Resolution 26 February 1959, and sold to BC Electric Company per OCPC 1959-1188, 17 September 1959" - "Seton Lake Indian Reserve 7". BC Geographical Names., citing Canadian Geographic Names Database.
- "Seton Lake 7 (rescinded)". BC Geographical Names.