Groucho Marx

~ as ~

Professor Wagstaff

Harpo Marx

~ as ~

Pinky

Chico Marx

~ as ~

Baravelli

Zeppo Marx

~ as ~

Frank Wagstaff

Thelma Todd

~ as ~

Connie Bailey

David Landau

~ as ~

Jennings

Bobby Barber

~ as ~

Speakeasy Patron (uncredited)

Reginald Barlow

~ as ~

Retiring Collage President (uncredited)

Vince Barnett

~ as ~

Speakeasy Patron (uncredited)

Sheila Bromley

~ as ~

Wagstaff's Receptionist (uncredited)