Robert Selden Duvall (born January 5, 1931) is an American actor and director. He has won an Academy Award, two Emmy Awards, four Golden Globe Awards and a BAFTA over the course of his career.

A veteran character actor, Duvall has starred in some of the most acclaimed and popular films and TV shows of all time, among them The Twilight Zone, The Outer Limits, To Kill a Mockingbird, THX 1138, Joe Kidd, The Godfather, The Godfather Part II, MASH, Network, True Grit, Bullitt, The Conversation, Apocalypse Now, Tender Mercies, The Natural and Lonesome Dove.

He began appearing in theater during the late 1950s, moving into television and film roles during the early 1960s in such works as To Kill a Mockingbird (1962) (as Boo Radley) and Captain Newman, M.D. (1963). He started to land much larger roles during the early 1970s with films like the blockbuster comedy MASH (1970) (as Major Frank Burns) and the lead in George Lucas' THX 1138 (1971). This was followed by a series of critically lauded performances in films which were also commercial successes: The Godfather (1972), The Godfather Part II (1974), Network (1976), The Great Santini (1979), Apocalypse Now (1979), and True Confessions (1981).