Jackie Cooper as James Michael 'Jimmy' Keenan

Martin Spellman as William McKinley 'Gimpy' Smith

Marjorie Reynolds as Anne Carroll

Dick Purcell as T.P. 'Tap' Keenan

George Cleveland as Pop O'Toole

George Irving as Judge Joseph Carroll

Robert Emmett O'Connor as Police Officer Burke

Sidney Miller as Jiggsy

David Durand as Spike Morgan

Buddy Pepper as Flatfoot

William Bucker as Sammy (uncredited)

Byron Foulger as 'Murderer' in Classroom (uncredited)

Jack Gordon as Street Policeman (uncredited)

William Gould as Police Detective (uncredited)

Robert Emmett Keane as Roger Wilson (uncredited)

Jack Kennedy as Police Sergeant (uncredited)

Donald Kerr as Newspaper Distributor (uncredited)

Lillian Randolph as Judge's Maid (uncredited)

Kent Rogers as Gang Member (uncredited)

Bobby Stone as Beansy (uncredited)

Robert Tucker as Spike's Pal (uncredited)

Frank Yaconelli as Flower Vendor (uncredited)