Leo Gorcey
— Slip Mahoney
Huntz Hall
— Sach Jones
Benny Bartlett
— Butch Williams
Percy Helton
— Warden B.W. Oswald
Barton MacLane
— Captain Jenkins
Anthony Caruso
— Percival P. Lannigan
Lyle Talbot
— Cy Bowman
Bernard Gorcey
— Louie Dumbrowsky
David Gorcey
— Chuck Anderson
Michael Ross
— "Big Greeny"
John Harmon
— Tomsic
Fritz Feld
— Dr. Fernando F. Fordyce
Harry Tyler
— Hank Gaffney - Convict
Murray Alper
— Kitchen Trustee Gus
Ray Walker
— Willy, gambling ring thug
Emil Sitka
— Prison Mugshot Photographer
Clegg Hoyt
— Chunky Guard, at warden's office
Frank Hagney
— Convict Frank, Lannigan's barber
Harold 'Tommy' Hart
— Convict Manicurist