Lucy Kate Jackson (born October 29, 1948) is an American actress and television producer, known for her television roles as Sabrina Duncan in the series Charlie's Angels (1976–79) and Amanda King in the series Scarecrow and Mrs. King (1983–87). Her film roles include Making Love (1982) and Loverboy (1989). She is a three-time Emmy Award nominee and four-time Golden Globe Award nominee.

Jackson began her career in the late 1960s in summer stock, before landing her first major television roles in Dark Shadows (1970–71) and The Rookies (1972–76). She also appeared in the film Night of Dark Shadows (1971). The huge success of her role as Sabrina Duncan on Charlie's Angels saw her appear on the front cover of Time magazine, alongside co-stars Farrah Fawcett and Jaclyn Smith, while her role as Mrs. King won her Germany's Bravo Golden Otto Award for Best Female TV Star three times (1986–88). She then continued to star in numerous TV movies, including Quiet Killer (1992), Empty Cradle (1993) and Satan's School for Girls (2000), a remake of the 1973 TV movie of the same name in which she also starred.