Groucho Marx
Dr. Hugo Z. Hackenbush
Maureen O'Sullivan
Judy Standish
Margaret Dumont
Emily Upjohn
Sig Ruman
Dr. Leopold X. Steinberg
Vivien Fay
Specialty Dancer
Ivie Anderson
Specialty Singer
Gino Corrado
Man Boarding Bus (uncredited)
Bess Flowers
Racetrack Spectator (uncredited)
Bert Moorhouse
Racetrack Spectator (uncredited)
Frank O'Connor
Racetrack Guard (uncredited)
Carole Landis
Party Guest (uncredited)
Etta Moten
Black Singer (uncredited)
Dorothy Dandridge
Singer (uncredited)
Byron Foulger
Racetrack Spectator (uncredited)
