R. G. Armstrong (7 April 1917 – 27 Julie 2012) was 'n Amerikaanse akteur. Hy was bekend vir sy rolle in die rolprente El Dorado (1967), Children of the Corn (1984), Predator (1987), en Dick Tracy (1990).
- 1954: Garden of Eden
- 1960: Ten Who Dared
- 1967: El Dorado
- 1971: J W Coop
- 1972: The Great Northfield Minnesota Raid
- 1972: Justin Morgan Had a Horse
- 1973: Gentle Savage
- 1973: My Name Is Nobody
- 1975: Boss Nigger
- 1976: Stay Hungry
- 1977: The Car
- 1977: The Pack
- 1978: Texas Detour
- 1979: Fast Charlie... the Moonbeam Rider
- 1981: Evilspeak
- 1984: Children of the Corn
- 1986: Red Headed Stranger
- 1987: Predator
- 1989: Ghetto Blaster
- 1990: Dick Tracy
- 2001: The Waking
- 2005: Passion & Poetry: The Ballad of Sam Peckinpah
- 2006: Sam Peckinpah: Portrait
- 2014: Passion & Poetry: Sam's Favorite Film
- 1961: Great Ghost Tales
- 1966: T.H.E. Cat
- 1969: Mr. Deeds Goes to Town
- 1976: Kingston: Confidential
- 1979: Dear Detective
- 1981: Darkroom
- 1987: Friday the 13th: The Series
- 1981: Stockers
- 1983: The Making of 'Lone Wolf McQuade'
- 1993: Sam Peckinpah: Man of Iron
- 1992: Gunfighters of the Old West
- 2005: Passion & Poetry: Major Dundee
- 2007: Passion & Poetry: Sam Peckinpah's Straw Dogs
- 2010: Passion & Poetry: The Early Sam
