Margaret Ann "Peggy" Lipton (born August 30, 1946) is an American actress and former model. She was an overnight success and is best known for her role as flower child Julie Barnes in the counterculture TV show The Mod Squad (1968-1973). Appearing in numerous TV series since her noted role as Norma Jennings in David Lynch's surreal Twin Peaks, Lipton has had a more than 40-year career in television, film, and stage.

She was married to the musician and producer Quincy Jones. She is mother to their two daughters, Rashida Jones and Kidada Jones, who have become actresses.