Robert Paige
— Hal Andrews / The Black Falcon
Richard Fiske
— Bart Davis
James Craig
— John Cummings
Lorna Gray
— Babs McKay
Sammy McKim
— Billy McKay
Stanley Brown
— Charles Bronson
Don Beddoe
— W. S. Hamilton
Forbes Murray
— Marvin Brewster / The Professor
Lee Prather
— Simmons
Beatrice Blinn
— Brewster's Secretary
Ann Doran
— Hamilton's Secretary
Dick Curtis
— Korman
Eddie Laughton
— Hall
John Tyrrell
— Williams
Eddie Fetherston
— Borden
John Dilson
— Dr. Alexander Craig