The Great O'Malley

Henry O'Neill

Defense Attorney

Craig Reynolds

Motorist Honking Horn

Hobart Cavanaugh

Reporter Pinky Holden

Gordon Hart

Doctor Attending O'Malley

Mary Gordon

Mrs. O'Malley

Mabel Colcord

Mrs. Flaherty

Frank Sheridan

Father Patrick

Lillian Harmer

Miss Taylor

Delmar Watson

Tubby

Frank Reicher

Dr. Larson

Joseph Allen Sr.

Warden (uncredited)

Granville Bates

Jake - Bar Proprietor (uncredited)

Georgie Billings

(uncredited)

Basil Bookasta

Bootblack (uncredited)