Margaret Ann Lipton (August 30, 1946 – May 11, 2019) was an American model, actress, and singer. She made appearances in many of the most popular television shows of the 1960s before she landed her defining role as flower child Julie Barnes in the crime drama The Mod Squad (1968–1973), for which she won the Golden Globe Award for Best Actress in a Television Series – Drama in 1970.

After The Mod Squad, Lipton married musician Quincy Jones and began a 15-year hiatus from acting, during which she raised her two children, Kidada and Rashida Jones. She returned to acting in 1988, performing in many TV roles, including Norma Jennings in David Lynch's Twin Peaks.