Monty O'Grady (6 March 1916–8 March 2000; age 84) was an actor who played an Eminian councilor in the Star Trek: The Original Series first season episode "A Taste of Armageddon" and a Janus VI civilian engineer in "The Devil in the Dark". He filmed his scenes for the former on Tuesday 3 January 1967 and Wednesday 4 January 1967 at Desilu Stage 10. As a background performer, he received no credit for his appearances.
A former child actor, O'Grady was best known as an early member of the Our Gang comedy troupe in the mid-1920s. As an adult, he became an extremely prolific background extra, appearing in almost four hundred film and television projects from the early-1940s to the mid-1990s.
His feature film work include The Wolf Man (1941), The Palm Beach Story (1942, with Max Wagner), Casablanca (1942), Heaven Can Wait (1943), The Miracle of the Bells (1948; with Sam Bagley and Ian Wolfe), Neptune's Daughter (1949, with Ricardo Montalban and Carl Saxe), Gun Crazy (1950), Gentlemen Prefer Blondes (1953, with Chuck Hicks and Arthur Tovey), The Band Wagon (1953, with Robert Gist, Julie Newmar, Lawrence Montaigne, Alan Marston, Dick Cherney, and Paul Power), Dial M for Murder (1954), A Star Is Born (1954, with David Armstrong, Carey Loftin, and Joseph Mell), To Catch a Thief (1955, starring Cary Grant and Grace Kelly, with Reginald Lal Singh), High Society (1956, starring Bing Crosby, Grace Kelly and Frank Sinatra, with Shep Houghton), Giant (1956, with Paul Fix), Funny Face (1957, starring Audrey Hepburn), Silk Stockings (1957, with Edwin Rochelle), An Affair to Remember (1957, with Lars Hensen), Witness for the Prosecution (1957, with Ian Wolfe, Torin Thatcher, Walter Bacon, Benjie Bancroft, Bill Irwin, and Arthur Tovey), North by Northwest (1959, with Robert Ellenstein, Stanley Adams, Roger C. Carmel, Bill Catching, Larry Dobkin, and Arthur Tovey), Pillow Talk (1959, with Joseph Mell and Charles Seel), The Apartment (1960, with Ray Walston), It Happened at the World's Fair (1963, with Gary Lockwood, Yvonne Craig, Benjie Bancroft,, Pete Kellett, Troy Melton, and Bill Quinn), The Sound of Music (1965, starring Christopher Plummer, featuring William Meader, and directed by Robert Wise), Walk Don't Run (1966, with Samantha Eggar, George Takei, and Miko Mayama), Johnny Got His Gun (1971, with Peter Brocco, Byron Morrow, David Soul, Peter Virgo, Jr., Bruce Watson, and Arthur Tovey), What's Up, Doc? (1972, with Kenneth Mars, Graham Jarvis, Stefan Gierasch, Jack Perkins, Carl Saxe, Tom Anfinsen, Shep Houghton, and Arthur Tovey), Conquest of the Planet of the Apes (1972, starring Roddy McDowall, with Ricardo Montalban, Lou Wagner, and Paul Comi), The Poseidon Adventure (1972, with John Crawford, Frieda Rentie, Phil Adams, Bill Catching, Dick Durock, Victor Paul, Elizabeth Rogers, David Sharpe, George Sawaya, Paul Stader, and Tom Steele), Blazing Saddles (1974, with David Huddleston, David Armstrong, Bill Catching, Dick Cherney, Robert Hitchcock, Hal Needham, Jack Perkins, Al Roberts, George Sawaya, David Sharpe, April Tatro, and Bill Zuckert), Young Frankenstein (1974, with Terri Garr, Kenneth Mars, Ian Abercrombie, Benjie Bancroft, Lars Hensen, John Hugh McKnight, Arthur Tovey, and Max Wagner), Marathon Man (1976, with Fritz Weaver, Marc Lawrence, and Mark L. Taylor), Close Encounters of the Third Kind (1977, starring Terri Garr), The China Syndrome (1979, with Marc Alaimo), Meteor (1979, with Brian Keith, Joseph Campanella, Michael Zaslow, Bibi Besch, Clyde Kusatsu, Bill Couch, Sr., and Robert Hitchcock), and The Karate Kid (1984, with Larry Drake and Robert Strong).