Actor
- Boffo! Tinseltown's Bombs and Blockbusters (2006) .... The Wizard of Oz (archive footage) (uncredited)
- The Wonderful Wizard of Oz: 50 Years of Magic (1990) .... Wizard of Oz (archive footage)
- Hollywood: The Early Years (1989) .... Himself (archive footage)
- Screen Snapshots: Hollywood Memories (1951) .... Himself (archive footage)
- Key to the City (1950) .... Fire Chief Duggan
- Any Number Can Play (1949) .... Jim Kurstyn
- The Great Sinner (1949) .... Aristide Pitard
- Some of the Best (1949) .... Himself (uncredited)
- The Stratton Story (1949) .... Barney Wile
- The Three Musketeers (1948) .... King Louis XIII
- Summer Holiday (1948) .... Uncle Sid
- Screen Snapshots: Hawaii in Hollywood (1948) .... Himself
- Green Dolphin Street (1947) .... Dr. Edmond Ozanne
- Lady Luck (1947) .... William Audrey
- The Cockeyed Miracle (1946) .... Sam Griggs
- Courage of Lassie (1946) .... Harry MacBain
- Yolanda and the Thief (1946) .... Victor Budlow Trout
- The Great Morgan (1946) .... Himself, Frank Morgan
- Casanova Brown (1944) .... Mr. Ferris
- The Human Comedy (1944) .... Willie Grogan
- The White Cliffs of Dover (1944) .... Hiram Porter Dunn
- Kismet (1944) .... Narrator (voice) (uncredited)
- Thousands Cheer (1943) .... Himself as Dr. Frank Morgan
- A Stranger in Town (1943) .... John Josephus Grant
- Tortilla Flat (1942) .... The Pirate
- White Cargo (1942) .... The Doctor
- Mother Goose on the Loose (1942) .... Narrator (uncredited) (voice)
- The Vanishing Virginian (1942) .... Robert Yancey
- Honky Tonk (1941) .... Judge Cotton
- Washington Melodrama (1941) .... Calvin Claymore
- The Wild Man of Borneo (1941) .... J. Daniel 'Dan' Thompson
- Keeping Company (1940) .... Harry C. Thomas
- Hullabaloo (1940) .... Frankie' Merriweather
- Boom Town (1940) .... Luther Aldrich
- The Mortal Storm (1940) .... Prof. Viktor Roth
- The Ghost Comes Home (1940) .... Vernon 'Vern' Adams
- Broadway Melody of 1940 (1940) .... Bob Casey
- The Shop Around the Corner (1940) .... Hugo Matuschek
- Balalaika (1939) .... Ivan Danchenoff
- Henry Goes Arizona (1939) .... Henry 'Hank' Conroy
- The Wizard of Oz (1939) .... Professor Marvel / The Gatekeeper / The Carriage Driver / The Guard Who Cries / The Wizard of Oz
- Broadway Serenade (1939) .... Cornelius Collier, Jr.
- Sweethearts (1938) .... Felix Lehman
- The Crowd Roars (1938) .... Brian McCoy
- Port of Seven Seas (1938) .... Panisse
- Paradise for Three (1938) .... Rudolph Tobler, aka Edward Schultz
- Rosalie (1937) .... King Fredrick Romanikov
- Beg, Borrow or Steal (1937) .... Ingraham Steward
- Sunday Night at the Trocadero (1937) .... Himself
- Saratoga (1937) .... Jesse Kiffmeyer
- The Emperor's Candlesticks (1937) .... Col. Baron Suroff
- Screen Snapshots Series 16, No. 8 (1937) .... Himself
- The Last of Mrs. Cheyney (1937) .... Lord Francis Kelton
- Dimples (1936) .... Prof. Eustace Appleby
- Piccadilly Jim (1936) .... James Crocker, Sr., aka Count Olav Osric
- Dancing Pirate (1936) .... Mayor Don Emilio Perena
- The Great Ziegfeld (1936) .... Billings
- Trouble for Two (1936) .... Col. Geraldine
- The Perfect Gentleman (1935) .... Major Horatio Chatteris
- I Live My Life (1935) .... G.P. Bentley
- Escapade (1935) .... Karl
- Lazybones (1935) .... Tom
- The Mighty Barnum (1935) .... Joe (uncredited)
- Screen Snapshots Series 14, No. 9 (1935) .... Himself
- Naughty Marietta (1935) .... Gov. Gaspar d'Annard
- The Good Fairy (1935) .... Konrad
- Enchanted April (1935) .... Mellersh Wilkins
- By Your Leave (1934) .... Henry Smith
- There's Always Tomorrow (1934) .... Joseph White
- A Lost Lady (1934) .... Daniel 'Dan' Forrester
- The Affairs of Cellini (1934) .... Alessandro - Duke of Florence
- Success at Any Price (1934) .... Raymond 'Ray' Merritt
- Sisters Under the Skin (1934) .... John Hunter Yates
- The Cat and the Fiddle (1934) .... Jules Daudet
- Bombshell (1933) .... Pops Burns
- Broadway to Hollywood (1933) .... Ted Hackett
- Best of Enemies (1933) .... William Hartman
- When Ladies Meet (1933) .... Rogers Woodruff
- Reunion in Vienna (1933) .... Dr. Anton Krug
- The Nuisance (1933) .... Dr. Buchanan Prescott
- The Kiss Before the Mirror (1933) .... Dr. Paul Held
- Hallelujah I'm a Bum (1933) .... Mayor John Hastings
- Luxury Liner (1933) .... Alex Stevenson
- Billion Dollar Scandal (1933) .... John Dudley Masterson
- The Half Naked Truth (1932) .... Farrell
- Secrets of the French Police (1932) .... François St. Cyr
- Fast and Loose (1930) .... Bronson Lenox
- Laughter (1930) .... C. Morton Gibson
- Queen High (1930) .... Mr. Nettleton
- Dangerous Nan McGrew (1930) .... Doc Foster
- Belle of the Night (1930) ....
- Scarlet Saint (1925) .... Baron Badeau
- The Golden Shower (1919) .... Lester
- Raffles, the Amateur Cracksman (1917) .... Bunny Manders
- Who's Your Neighbor? (1917) .... Dudley Carlton


