Ellen Tyne Daly is an American actress whose six-decade career included many leading roles in movies and theater. She has won six Emmy Awards for her television work, a Tony Award, and is a 2011 American Theatre Hall of Fame inductee.

Daly began her career on stage in summer stock in New York and made her Broadway debut in the play That Summer – That Fall in 1967. She is best known for her television role as Detective Mary Beth Lacey in the CBS police drama Cagney & Lacey (1982–88), for which she won four Primetime Emmy Awards for Outstanding Lead Actress in a Drama Series. She also won Emmy Awards for her roles as Alice Henderson in the period drama series Christy (1994–95), and Maxine Gray in the legal drama series Judging Amy (1999–2005).

Daly's first Broadway role was in 1967 in a short-lived play, That Summer, That Fall.

Daly appeared in John and Mary (1969), Angel Unchained (1970), Play It as It Lays (1972), and The Adulteress. She was cast as Inspector Harry Callahan's first female partner, Kate Moore, in the 1976 Dirty Harry film The Enforcer. The film was critically panned, though a box office success. Daly's performance divided critics, with some calling it too "mannered" for film, while others praised the strength she brought to the role. The concept of a male/female police partnership was later used as the basis for the television show Hunter.