| A Compassionate Spy (2022) as Self (archive footage) (uncredited) |
| Thou Shalt Not: Sex, Sin and Censorship in Pre-Code Hollywood (2008) as Various Roles (archive footage) |
| Checking Out: Grand Hotel (2004) as Self (archive footage) |
| Discovering Treasure: The Story of 'The Treasure of the Sierra Madre' (2003) as Howard (archive footage) |
| Why We Fight: World War II: The Battle of China / War Comes to America (2000) as Narrator |
| Bogart: The Untold Story (1997) as Self (archive footage) |
| Joan Crawford: Always the Star (1996) as Self (archive footage) |
| John Huston: The Man, the Movies, the Maverick (1988) as Self (archive footage) |
| Going Hollywood: The '30s (1984) as (archive footage) |
| Hollywood Out-takes and Rare Footage (1983) as Self (archive footage) (uncredited) |
| Brother, Can You Spare a Dime? (1975) as Self (archive footage) |
| Brasileiros em Hollywood (1970) as Self (archive footage) |
| Anniversary (1963) as Himself - Archive Footage (uncredited) |
| Armored Attack! (1957) as Dr. Kurin |
| The Furies (1950) as T. C. Jeffords |
| The Great Sinner (1949) as General Ostrovsky |
| Summer Holiday (1948) as Mr. Nat Miller |
| The Treasure of the Sierra Madre (1948) as Howard |
| Duel in the Sun (1946) as The Sinkiller |
| Let There Be Light (1946) as Narrator (voice) (uncredited) |
| Dragonwyck (1946) as Ephraim Wells |
| And Then There Were None (1945) as Edward Armstrong |
| Know Your Enemy: Japan (1945) as Narrator |
| War Comes to America (1945) as Narrator |
| Why We Fight: The Battle of China (1944) as Abraham Lincoln |
| Dragon Seed (1944) as Ling Tan |
| Twenty Years After (1944) as (archive footage) |
| Know Your Ally: Britain (1944) as Narrator |
| War Department Report (1943) as Narrator (voice) |
| The North Star (1943) as Dr. Kurin |
| The Voice That Thrilled the World (1943) as Jerry Cohan (archive footage) |
| Why We Fight: The Battle of Britain (1943) as Narrator |
| Report from the Aleutians (1943) as Voices of officers (voice) |
| For God and Country (1943) as Narrator |
| Mission to Moscow (1943) as Ambassador Joseph E. Davies |
| Edge of Darkness (1943) as Dr. Martin Stensgard |
| December 7th (1943) as Uncle Sam 'U.S.' |
| The Outlaw (1943) as Doc Holliday |
| Why We Fight: Divide and Conquer (1943) as Narrator |
| Why We Fight: The Nazis Strike (1943) as Narrator |
| Our Russian Front (1942) as Narrator |
| Yankee Doodle Dandy (1942) as Jerry Cohan |
| Why We Fight: Prelude to War (1942) as Self - Narrator (voice) |
| In This Our Life (1942) as Bartender (uncredited) |
| Always in My Heart (1942) as MacKenzie Scott |
| Safeguarding Military Information (1942) as General (uncredited) |
| The Shanghai Gesture (1941) as Sir Guy Charteris |
| Swamp Water (1941) as Thursday Ragan |
| The Maltese Falcon (1941) as Captain Jacoby (uncredited) |
| All That Money Can Buy (1941) as Mr. Scratch |
| The Light That Failed (1939) as Torpenhow |
| Of Human Hearts (1938) as Ethan Wilkins |
| Dodsworth (1936) as Sam Dodsworth |
| Rhodes of Africa (1936) as Cecil John Rhodes |
| Sunkist Stars at Palm Springs (1936) |
| The Tunnel (1935) as President of the United States |
| Hollywood Hobbies (1935) as Himself |
| Keep 'Em Rolling (1934) as Sgt. Benjamin E. Walsh |
| The Prizefighter and the Lady (1933) as Edwin J. Bennett ("The Professor") |
| Ann Vickers (1933) as Barney Dolphin |
| Storm at Daybreak (1933) as Mayor Dushan Radovic |
| Hell Below (1933) as Lieut. Comdr. T.J. Toler USN |
| Gabriel Over the White House (1933) as Hon. Judson Hammond - The President of the United States |
| Rain (1932) as Alfred Davidson |
| Kongo (1932) as Flint |
| American Madness (1932) as Thomas Dickson |
| Night Court (1932) as Judge Andrew J. Moffett |
| The Wet Parade (1932) as Pow Tarleton |
| The Beast of the City (1932) as Captain James "Jim" Fitzpatrick aka Fighting Fitz |
| Law and Order (1932) as Frame 'Saint' Johnson |
| The Woman from Monte Carlo (1932) as Captain Corlaix |
| Intimate Interviews: Walter Huston (1931) as Self |
| Voice of Hollywood (Series 2, No. 3) (1931) as Self |
| A House Divided (1931) as Seth Law |
| The Ruling Voice (1931) as Jack Bannister |
| The Star Witness (1931) as District Attorney Whitlock |
| How I Play Golf, by Bobby Jones No. 7: 'The Spoon' (1931) as Judge Walter Huston (uncredited) |
| The Criminal Code (1931) as Mark Brady |
| Abraham Lincoln (1930) as Abraham Lincoln |
| 1930 Prelude to "The Birth of a Nation" (1930) as Self |
| The Virtuous Sin (1930) as Gregory Platoff |
| The Bad Man (1930) as Pancho Lopez |
| An Intimate Dinner in Celebration of Warner Bros. Silver Jubilee (1930) as Self |
| Behind the Make-Up (1930) as Joe in Clark & White's Office (uncredited) |
| The Virginian (1929) as Trampas |
| The Lady Lies (1929) as Robert Rossiter |
| Two Americans (1929) as Abraham Lincoln |
| Gentlemen of the Press (1929) as Wickland Snell |
| The Bishop's Candlesticks (1929) as The Convict |