Diana Ewing (born January 4, 1946) is an American former actress.
Born in Honolulu, Ewing acted in plays at Punahou School and Honolulu Community Theater, in her teenage years. She is the daughter of Marjorie A. Ewing and William Hugh Ewing, Jr., who was editor of the Honolulu Star-Bulletin and covered the Attack on Pearl Harbor for the Associated Press. She worked at a newspaper during the summers of her high-school years, and she attended Sarah Lawrence College.
Ewing acted at the Manhattan Playhouse in East Palo Alto, California. Productions in which she performed included The Master Builder and Slow Dance on the Killing Ground.
Ewing guest-starred on several television series including The Mod Squad (1968); Love, American Style (1969); ' (1969); The Big Valley (1969); The F.B.I. (1970); Archer (1975); ' (1977); Harry O (1974); and The Rockford Files (1977). One of her earliest television roles was in the original ' in the third-season episode 21 "The Cloud Minders" (1969) as Droxine.
Ewing made her feature film debut in the supporting role of Tracy Rutledge, in the movie 80 Steps to Jonah (1969), and also appeared in Play It as It Lays (1972) and The Way We Were (1973). Her last appearance on the big screen was as Jenny in the western thriller Knife for the Ladies (1974). Her last television appearance was in '.
Ewing married Timothy Woolley Quealy on June 17, 1965. She was thereafter married to writer Charles Shyer from 1969 until 1974.