Robert Selden Duvall (born January 5, 1931) is an American actor and filmmaker. He is the recipient of an Academy Award, four Golden Globe Awards, a BAFTA Award, two Primetime Emmy Awards and a Screen Actors Guild Award.

Duvall began appearing in theater in the late 1950s, moving into television and film roles during the early 1960s, playing Boo Radley in To Kill a Mockingbird (1962) and appearing in Captain Newman, M.D. (1963), as Major Frank Burns in the blockbuster comedy MAS*H (1970) and the lead role in THX 1138 (1971), as well as Horton Foote's adaptation of William Faulkner's Tomorrow (1972), which was developed at The Actors Studio and is his personal favorite. This was followed by a series of critically lauded performances in commercially successful films.

He has starred in numerous films and television series, including The Twilight Zone (1963), The Outer Limits (1964), The F.B.I. (1966), Bullitt (1968), True Grit (1969), Joe Kidd (1972), The Godfather (1972), The Godfather Part II (1974), The Conversation (1974), Network (1976), Apocalypse Now (1979), The Great Santini (1979), Tender Mercies (1983) (which earned him the Academy Award for Best Actor), The Natural (1984), Colors (1988), Lonesome Dove (1989), The Handmaid's Tale (1990), Days of Thunder (1990), Rambling Rose (1991), Falling Down (1993), Secondhand Lions (2003), The Judge (2014), and Widows (2018).

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