Groucho Marx
Otis B. Driftwood
Chico Marx
Fiorello
Harpo Marx
Tomasso
Kitty Carlisle
Rosa
Allan Jones
Ricardo Barroni
Sig Ruman
Gottlieb
Walter Woolf King
Lassparri
Robert Emmett O'Connor
Henderson
Margaret Dumont
Mrs. Claypool
Edward Keane
Captain
Jonathan Hale
The Stage Manager (uncredited)
Otto Fries
Otto the Elevator Operator (uncredited)
Gino Corrado
First Porter (uncredited)
Bess Flowers
Ship Passenger (uncredited)
Chuck Hamilton
Policeman (uncredited)
Frank McLure
Manager's Assistant (uncredited)
William H. O'Brien
Stagehand (uncredited)
George Irving
Committeeman (uncredited)
Billy Gilbert
Orchestra Member Asking Fiorello Not to Play Piano (uncredited)
Ruth Cherrington
Opera Spectator (uncredited)
Al Bridge
Immigration Inspector (uncredited)
Selmer Jackson
Committeeman (uncredited)
Jack 'Tiny' Lipson
Engineer's Assistant (uncredited)
Stanley Blystone
Ship's Officer (uncredited)
Wedgwood Nowell
Ship Passenger (uncredited)
King Baggot
Dignitary (uncredited)
John St. Polis
Opera Conductor (uncredited)
Bud Geary
Stagehand (uncredited)
Rolfe Sedan
Aviator (uncredited)
Sam Appel
Dungeon Guard (uncredited)
Stephen Soldi
Ship's Steward (uncredited)
Purnell Pratt
Mayor (uncredited)
Evelyn Selbie
Fortune Teller (uncredited)
Jay Eaton
Aviator (uncredited)
Harry 'Zoup' Welsh
Ship's Steward (uncredited)