Attorney J. Cheever Loophole
Groucho Marx
Antonio Pirelli
Chico Marx
Little Professor Atom (as Jerry Marenghi)
Jerry Maren
Whitcomb
Barnett Parker
Telegraph Clerk (uncredited)
Irving Bacon
Redcap (uncredited)
Willie Best
Chef in Diner (uncredited)
Frank Orth
Old Man (uncredited)
John Binns
Undetermined Role (uncredited)
Henry Blair
Member of Quarttete (uncredited)
George Bookasta
Party Guest (uncredited)
James Conaty
Telegrapher (uncredited)
Frank Darien
'Punchy'
Harpo Marx
Singer / Dancer - 'Swingali' (uncredited)
Dudley Dickerson
Betsy Gay
Gibraltar (uncredited)
Charles Gemora
Man Leaving Diner (uncredited)
John George
Train Passenger (uncredited)
Bobby Hale
Conductor (uncredited)
Harry Hayden
Circus Patron (uncredited)
Shep Houghton
Boy at Circus (uncredited)
Payne B. Johnson
Club Car Train Passenger (uncredited)
Carl M. Leviness
Checkers Player (uncredited)
Buck Mack
Jeff Wilson
Kenny Baker
Attendant (uncredited)
Murdock MacQuarrie
Cabbie (uncredited)
Matt McHugh
Governor (uncredited)
Edmund Mortimer
Captain (uncredited)
Forbes Murray
Ringmaster (uncredited)
Emory Parnell
Black Woman - 'Swingali' (uncredited)
Lillian Randolph
Larry Steers
Fred Walburn
Robert Winkler
Hazel Dohlman
Julie Randall
Florence Rice
Stuart Hall
Peerless Pauline
Eve Arden
Mrs. Suzanna Dukesbury
Margaret Dumont
Goliath
Nat Pendleton
Jardinet
Fritz Feld
John Carter
James Burke
Producer
Mervyn LeRoy
Lyricist
E.Y. Harburg
Recording Supervision
Douglas Shearer
Music Director
Franz Waxman
Original Music Composer
Songs
Harold Arlen
Set Decoration
Edwin B. Willis
Art Direction
Cedric Gibbons
Director
Edward Buzzell
Assistant Art Director
Stan Rogers
Choreographer
Bobby Connolly
Screenplay
Irving Brecher
Editor
William H. Terhune
Director of Photography
Leonard Smith
Costume Design
Dolly Tree
Fred Valles