Adeline Smith (March 15, 1918 – March 19, 2013) (Lower Elwha Klallam Tribe) was an American elder, lexicographer, activist, and cultural preservationist. She was a member of one of four indigenous Klallam communities of the Pacific Northwest. Smith was one of the last two native speakers of the Klallam language who spoke it as her first language. Smith led efforts to revive the Klallam language.