- The Marx Brothers
- (as The Four Marx Brothers)
- Groucho Marx
- Rufus T. Firefly
- Harpo Marx
- Pinky
- Chico Marx
- Chicolini
- Zeppo Marx
- Bob Roland
- Margaret Dumont
- Gloria Teasdale
- Raquel Torres
- Vera Marcal
- Louis Calhern
- Ambassador Trentino
- Edmund Breese
- Zander
- Leonid Kinskey
- Sylvanian Agitator
- Charles Middleton
- Prosecutor
- Edgar Kennedy
- Lemonade Vendor
- Wade Boteler
- Officer at Battle Headquarters
- Sidney Bracey
- Mrs. Teasdale's Butler
- E.H. Calvert
- Officer in Battle Sequence
- Davison Clark
- Minister of Finance #2
- Louise Closser Hale
- Reception Guest
- Joseph Crehan
- Dignitary at Reception
- Carrie Daumery
- Reception Guest
- Mario Dominici
- Minister
- Maude Turner Gordon
- Reception Guest
- Verna Hillie
- Trentino's Blonde Secretary
- Edward LeSaint
- Secretary of Labor
- George MacQuarrie
- Judge #1
- Edwin Maxwell
- Freedonia's Secretary of War #1
- Eric Mayne
- Judge #3
- Edmund Mortimer
- Minister
- Dennis O'Keefe
- Bridegroom at Firefly's Reception
- Leo Sulky
- Agitator
- Frederick Sullivan
- Judge #2
- Ben Taggart
- Trench Officer
- Dale Van Sickel
- Palace Guard
- Charles West
- Minister
- Florence Wix
- Reception Guest
- William Worthington
- Minister of Finance #1
