2013Greenboy: Prescription for Death— Bill Gannon (archive footage)
2002M*A*S*H: 30th Anniversary Reunion— Himself
2001The Shootist: The Legend Lives On— Self (archive footage) (uncredited)
1997Bizim Kamp— Sol Rubins
1994Incident in a Small Town— Judge Bell
1992Against Her Will: An Incident in Baltimore— Judge Stoddard Bell
1991Memories of M*A*S*H— Self / Sherman Potter
1990The Incident— Judge Bell
1988Mucize Deney— Uncle Herb
1983Sparkling Cyanide— Captain Kemp
1982Ejderhaların Uçuşu— Carolinus (voice)
1982Showbiz Goes to War— Self (archive footage)
1981Rivkin: Bounty Hunter— Father Everett Kolodny
1981Making 'M*A*S*H'— Self
1980Roughnecks— Plug Champion
1980Scout's Honor— Mr. Briggs
1980More Wild Wild West— Robert T. 'Skinny' Malone
1979Lapacılar Çetesi— T.P. Gaskill
1979The Wild Wild West Revisited— Robert T. Malone
1979You Can't Take it With You— Mr. DePinna
1979Better Late Than Never— Mr. Scott
1978Maneaters Are Loose!— Toby Waites
1978Uzaydan Gelen Kedi— General Stilton
1978Confessions of the D.A. Man— H.M. 'Staff' Stafford
1978Kate Bliss and the Ticker Tape Kid— Hugo Peavey
1978Murder at the Mardi Gras— Jim Bob Jackson
1977Exo-Man— Arthur Travis
1976The Shootist— Marshall Thibido
1975The Apple Dumpling Gang— Homer McCoy
1975The Last Day— Narrator
1974Sidekicks— Sheriff Jenkins
1973Charley and the Angel— Angel
1972Snowball Express— Jesse McCord
1972The Century Turns— Doc Amos B. Coogan
1971The Barefoot Executive— E.J. Crampton
1971Silahşörü Destekleyin— Taylor
1971Scandalous John— Sheriff Pippin
1971The Feminist and the Fuzz— Horace Bowers
1971Cat Ballou— The Rancher
1971Ellery Queen: Don't Look Behind You— Insp. Richard Queen
1970But I Don't Want to Get Married!— Mr. Good
1969Hızlı Şerif— Olly Perkins
1969Viva Max!— Chief of Police Sylvester
1969Dragnet— Bill Gannon
1968Star Spangled Salesman— TV Cop
1967The Flim-Flam Man— Sheriff Slade
1966What Did You Do in the War, Daddy?— Major Pott
1966Frankie ve Johnny— Cully
1965John Goldfarb, Please Come Home!— Sarajevo
1962Batının Zaferi— Ulysses S. Grant
1960Cimarron— Jessie Rickey
1960The Mountain Road— Mike Michaelson
1959It Started with a Kiss— Charles Meriden
1957The Teahouse of the August Moon— Sergeant Gregovich
1957Under Fire— Sgt. Joseph C. Dusak
1956Ters Tepki— Tony Welker
1956Star in the Dust— Lew Hogan
1956Operation Teahouse— Self
1956The Bottom of the Bottle— Felix - Barkeep
1955Strategic Air Command— Sergeant Bible
1955Not as a Stranger— Oley
1954The Glenn Miller Story— Chummy MacGregor
1954The Far Country— Ketchum
1954About Mrs. Leslie— Fred Blue
1954Prisoner of War— Maj. O.D. Hale
1954The Forty-Niners— Alf Billings
1953Thunder Körfezi— Rawlings
1953Arena— Lew Hutchins
1953Torch Song— Joe Denner
1953Champ for a Day— Al Muntz
1952Kahraman Şerif— Sam Fuller
1952Scandal Sheet— Biddle
1952My Six Convicts— Dawson
1952Gaip Kervan— Shorty
1952Stop, You're Killing Me— Innocence
1952Apache War Smoke— Ed Cotten
1952Boots Malone— Quarter Horse Henry
1952Toughest Man in Arizona— Verne Kimber
1952The Devil and John Q— Abe Lincoln
1952What Price Glory— Sergeant Moran
1951The Well— Claude Packard
1951The Blue Veil— Charles Hall
1951Belle Le Grand— Abel Stone
1951When I Grow Up— Father Reed (Modern)
1951The Highwayman— Tim
1950Appointment with Danger— George Soderquist
1950Dark City— Soldier
1950The Showdown— Rod Main
1950Outside the Wall— Garth
1949Holiday Affair— Police Lieutenant (as Henry Morgan)
1949Red Light— Rocky
1949Strange Bargain— Richard Webb
1949Madame Bovary— Hyppolite
1949Hello Out There— The Young Gambler
1949Down to the Sea in Ships— Britton
1948Yellow Sky— Half Pint
1948Moonrise— Billy Scripture
1948All My Sons— Frank Lubey
1948The Big Clock— Bill Womack
1948Race Street— Hal Towers
1948The Saxon Charm— Hermy
1947The Gangster— Shorty
1946Dragonwyck— Klaas Bleecker
1946From This Day Forward— Hank Beesley
1946It Shouldn't Happen to a Dog— Gus Rivers
1946Somewhere in the Night— Bath Attendant
1946Johnny Comes Flying Home— Joe Patillo
1945State Fair— Barker
1945A Bell for Adano— Capt. N. Purvis
1944Wing and a Prayer— Malcolm Brainard
1944Roger Touhy, Gangster— Thomas "Smoke" Reardon
1944The Eve of St. Mark— Private Shevlin
1944Gentle Annie— Cottonwood Goss (as Henry Morgan)
1944Take It or Leave It— (archive footage) (uncredited)
1943Crash Dive— Brownie
1943Happy Land— Tony Cavrek (as Henry Morgan)
1943Ox-Bow Olayı— Art Croft
1942To the Shores of Tripoli— Mouthy
1942The Omaha Trail— Henchman Nat
1942Orchestra Wives— Cully Anderson
1942The Loves of Edgar Allan Poe— Ebenezer Burling
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