Duck Soup

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

Street Vendor

Edward Arnold

Politician (uncredited)

Wade Boteler

Officer at Battle Headquarters (uncredited)

Sidney Bracey

Mrs. Teasdale's Butler (uncredited)

E.H. Calvert

Officer in Battle Sequence (uncredited)

Davison Clark

Minister of Finance #2 (uncredited)

Louise Closser Hale

Reception Guest (uncredited)

Carrie Daumery

Reception Guest (uncredited)

Maude Turner Gordon

Reception Guest (uncredited)

Florence Wix

Reception Guest (uncredited)

Joseph Crehan

Dignitary at Reception (uncredited)

Mario Dominici

Minister (uncredited)

Edmund Mortimer

Minister (uncredited)

Charles West

Minister (uncredited)

Verna Hillie

Trentino's Blonde Secretary (uncredited)

Edward LeSaint

Secretary of Labor (uncredited)

George MacQuarrie

First Judge (uncredited)

Frederick Sullivan

Second Judge (uncredited)

Eric Mayne

Third Judge (uncredited)

Edwin Maxwell

Freedonia's Secretary of War #1 (uncredited)

Dennis O'Keefe

Bridegroom at Firefly's Reception (uncredited)

Leo Sulky

Agitator (uncredited)

Dale Van Sickel

A Palace Guard (uncredited)

William Worthington

First Minister of Finance (uncredited)

Leo McCarey

Director

Harry Ruby

Writer

Bert Kalmar

Writer

Nat Perrin

Writer

Arthur Sheekman

Writer

Herman J. Mankiewicz

Producer