- Hart to Hart: Crimes of the Hart
1994 Professor Cabel
- Preminger: Anatomy of a Filmmaker
1991 actor 'Advise and 'Consent' (archive footage) (uncredited)
- Cast the First Stone
1989 Martin
- Under Siege
1986 John Pace
- L.A. Law
1986 Lorimar Henderson
- Outlaws
1986
- Lime Street
1985 Henry Wade Culver
- Don Camillo
1984 Doc
- Bruised Celluloid
1984 Himself
- Finder of Lost Loves
1984 Oliver Hawthorne
- The A-Team
1983 Bernie Greene
- Fame
1982
- Hotel
1982 Nelson O'Neil
- Cagney & Lacey
1982
- Of Mice and Men
1981 Candy
- Simon & Simon
1981
- Reunion
1980 Bob Hollander
- Magnum, P.I.
1980 Sidney Dollinger
- Letters from Frank
1979 Dan Miller
- Knots Landing
1979 Andrew Douglas
- Salem's Lot
1979 Jason Burke
- Damien - Omen II
1978 Bill Atherton
- Suddenly, Love
1978 Mr. Graham
- Battlestar Galactica
1978 President Adar
- The Story of Noah
1978 Noah
- Battlestar Galactica
1978 President Adar
- Flying High
1978 Wilbur Dodson
- End of the World
1977 Com. Joseph Beckerman
- The Love Boat
1977 Carl Hooper
- The Fantastic Journey
1977 Rayat
- Francis Gary Powers: The True Story of the U-2 Spy Incident
1976 Allen Dulles
- That's Entertainment, Part II
1976 (archive footage)
- The Bionic Woman
1976
- Quincy, M.E.
1976
- Altars of the World
1976 Director
- Wonder Woman
1975 Dr. Kenneth Wilson
- The Questor Tapes
1974 Vaslovik
- Heatwave!
1974 Dr. Grayson
- Battle for the Planet of the Apes
1973 Mandemus
- The Stranger
1973 Prof. Dylan MacAuley
- Hawkins
1973 Gus Bitterman
- The Magician
1973 Max Braden
- The Man
1972 Noah Calvin
- She Waits
1972 Dr. Sam Carpenter
- The Biscuit Eater
1972 Mr. Ames
- Kung Fu
1972 Beaumont
- Earth II
1971 President Charles Carter Durant
- Columbo
1971 Howard Nicholson
- McMillan & Wife
1971
- The Interns
1970
- Marcus Welby, M.D.: A Matter of Humanities
1969 Dr. Andrew Swanson
- Hawaii Five-O
1969 The Governor
- Cocoon
1968 The Governor
- ABC Stage 67
1966 Arthur
- The F.B.I.
1965 Marshall Winslow
- The Big Valley
1965 Sheriff Roy Kingston
- The Carpetbaggers
1964 Mac McAllister
- Kraft Suspense Theatre
1963 Dr. Thomas Clay
- Advise & Consent
1962 The Vice President
- The Virginian
1962 Judge John Markham
- Bus Stop
1961
- Ben Casey
1961
- My Three Sons
1960
- Route 66
1960
- The Barbara Stanwyck Show
1960 Dr. Paul Harris
- Laramie
1959
- The DuPont Show with June Allyson
1959 Howard Moon
- One Against Many
1956 Dr. John Mohler
- The Family Nobody Wanted
1956 Carl Doss
- Dick Powell's Zane Grey Theatre
1956 Clint Howard
- Gunsmoke
1955 Jonathan Cole
- Screen Director's Playhouse
1955 Dr. John Mohler
- Climax!
1954 Bob Kilgore
- Donovan's Brain
1953 Dr. Patrick J. Cory
- No Escape
1953 John Howard Tracy
- Omnibus
1952
- Cavalcade of America
1952 Matt Needham
- New Mexico
1951 Captain Hunt
- The Capture
1950 Lin Vanner / Lindley Brown
- Johnny Belinda
1948 Robert Richardson
- The Unfaithful
1947 Larry Hannaford
- The Way of Peace
1947 Narrator (voice)
- The Dark Mirror
1946 Scott Elliott
- Fingers at the Window
1942 Oliver Duffy
- Dr. Kildare's Victory
1942 Dr. James Kildare
- Dr. Kildare's Wedding Day
1941 Dr. James Kildare
- The People Vs. Dr. Kildare
1941 Dr. James Kildare
- Maisie Was a Lady
1941 Bob Rawlston
- Dr. Kildare Goes Home
1940 Dr. James Kildare
- Dr. Kildare's Crisis
1940 Dr. James Kildare
- Dr. Kildare's Strange Case
1940 James Kildare
- The Golden Fleecing
1940 Henry Twinkle
- Calling Dr. Kildare
1939 Dr. James Kildare
- The Secret of Dr. Kildare
1939 James Kildare
- Broadway Serenade
1939 James Geoffrey 'Jimmy' Seymour
- The Ice Follies of 1939
1939 Eddie Burgess
- These Glamour Girls
1939 Philip S. Griswold III
- Remember?
1939 Sky Ames
- Holiday
1938 Ned Seton
- Young Dr. Kildare
1938 Dr. James Kildare
- King of the Newsboys
1938 Jerry Flynn
- Rich Man, Poor Girl
1938 Henry Thayer
- Spring Madness
1938 Sam Thatcher
- Scandal Street
1938 Joe McKnight
- The Crime Nobody Saw
1937 Nick Milburn
- The Last Train from Madrid
1937 Bill Dexter
- Hold 'Em Navy
1937 Tommy Graham
- Shakedown
1936 Bob Sanderson
- Murder with Pictures
1936 Kent Murdock
- Panic on the Air
1936 Jerry
- The Leathernecks Have Landed
1936 Woodruff 'Woody' Davis
- Lady Be Careful
1936 Chester aka Dynamite
- Hearts in Bondage
1936 Director
- Spring Tonic
1935 Caleb Enix
- The Lottery Lover
1935 Cadet Frank Harrington
- Silk Hat Kid
1935 Eddie Howard
- Cross Country Cruise
1934 Norman Winthrop
- She Learned About Sailors
1934 Larry Wilson
- Servants' Entrance
1934 Erik Landstrom
- Let’s Be Ritzy
1934 Jimmy Sterling
- State Fair
1933 Pat Gilbert
- Don't Bet on Love
1933 Bill McCaffrey
- My Weakness
1933 Ronnie Gregory
- Okay, America!
1932 Larry Wayne
- The Impatient Maiden
1932 Dr. Myron Brown
- Night World
1932 Michael Rand
- The Cohens and Kellys in Hollywood
1932 Lew Ayres
- Iron Man
1931 Kid Mason
- Up for Murder
1931 Robert Marshall
- Heaven on Earth
1931 States
- The Spirit of Notre Dame
1931 Edward Aloysius "Bucky" O'Brian
- Many a Slip
1931 Jerry Brooks
- All Quiet on the Western Front
1930 Paul Bäumer
- The Doorway to Hell
1930 Louie Ricarno
- East Is West
1930 Billy Benson
- Common Clay
1930 Hugh Fullerton
- The Kiss
1929 Pierre
- Big News
1929 Copyboy (uncredited)
- The Sophomore
1929 Sophomore Fraternity Brother (uncredited)
