Credits

• 2001 · The Shootist: The Legend Lives On as Self (archive footage) (uncredited)
• 1992 · John Wayne's 'The Alamo' as Sam Houston
• 1981 · The Bushido Blade as Matthew Perry
• 1979 · Winter Kills as Keifitz
• 1978 · The Big Sleep as Lash Cansino
• 1977 · The Hobbit as Smaug (voice)
• 1977 · The Last Dinosaur as Masten Thrust Jr.
• 1976 · The Shootist as Mike Sweeney
• 1976 · God's Gun as The Sheriff
• 1975 · Against a Crooked Sky as Russian
• 1974 · The Great Niagara as Aaron Grant
• 1972 · Goodnight, My Love as Francis Hogan
• 1972 · The Century Turns as Hec Ramsey
• 1972 · Deadly Harvest as Anton Solca
• 1972 · Hec Ramsey as Hec Ramsey
• 1971 · In Broad Daylight as Tony Chappel
• 1971 · Big Jake as John Fain
• 1970 · Madron as Madron
• 1970 · The Kremlin Letter as Ward
• 1969 · The Arrangement as Sam Arness
• 1969 · The Night of the Following Day as Leer
• 1968 · Kona Coast as Capt. Sam Moran
• 1967 · Cimarron Strip as
• 1967 · Hombre as Cicero Grimes
• 1965 · The War Lord as Bors
• 1964 · Rio Conchos as Maj. James 'Jim' Lassiter
• 1963 · The Richard Boone Show as
• 1962 · The Tonight Show Starring Johnny Carson as Self
• 1961 · The Mike Douglas Show as Self
• 1961 · A Thunder of Drums as Capt. Stephen Maddocks
• 1960 · The Alamo as Gen. Sam Houston
• 1960 · Ocean's Eleven as Voice of Minister (voice) (uncredited)
• 1960 · The Right Man as Abraham Lincoln
• 1958 · I Bury the Living as Robert Kraft
• 1957 · Have Gun, Will Travel as Paladin
• 1957 · Tonight Starring Jack Paar as Self
• 1957 · The Garment Jungle as Artie Ravidge
• 1957 · Lizzie as Dr. Neal Wright
• 1957 · The Tall T as Frank Usher
• 1956 · Away All Boats as Lieut. Fraser
• 1956 · Star in the Dust as Sam Hall
• 1956 · Battle Stations as The Captain
• 1955 · Matinee Theater as
• 1955 · The Big Knife as Narrator (Voice)
• 1955 · Frontier as Everett Brayer
• 1955 · Robbers' Roost as Hank Hays
• 1955 · Man Without a Star as Steve Miles
• 1955 · Ten Wanted Men as Wick Campbell
• 1954 · Climax! as Col. William Hughes
• 1954 · Climax! as David Neff
• 1954 · Climax! as Jarech
• 1954 · Climax! as Detective Ed Brooks
• 1954 · Medic as Dr. Konrad Styner
• 1954 · Dragnet as Capt .James E. Hamilton
• 1954 · The Raid as Capt. Lionel Foster
• 1954 · The Siege at Red River as Brett Manning
• 1953 · Beneath the 12-Mile Reef as Thomas Rhys
• 1953 · Vicki as Lt. Ed Cornell
• 1953 · The Robe as Pontius Pilate
• 1953 · City of Bad Men as John Ringo
• 1953 · Man on a Tightrope as Krofta
• 1953 · General Electric Theater as Abraham Lincoln
• 1952 · Way of a Gaucho as Major Salinas
• 1952 · The Ford Television Theatre as Local Press
• 1952 · Kangaroo as John W. Gamble
• 1952 · Return of the Texan as Rod Murray
• 1952 · Red Skies of Montana as Richard 'Dick' Dryer
• 1951 · The Desert Fox: The Story of Rommel as Capt. Hermann Aldinger
• 1951 · Call Me Mister as Mess Sergeant
• 1951 · Halls of Montezuma as Lt. Col. Gilfillan
• 1950 · Lux Video Theatre as Saxon
• 1950 · Lux Video Theatre as Vincent Giel
• 1950 · What's My Line? as Self - Mystery Guest
• 1950 · What's My Line? as Self - Panelist
• 1949 · The Front Page as Wilson
• 1949 · Suspense as Mercer
• 1948 · Studio One as John Wesley Hardin
• 1948 · The Ed Sullivan Show as Self