Flash Gordon
Buster Crabbe
Dale Arden
Carol Hughes
Prince Barin
Roland Drew
Captain Torch
Don Rowan
Lieutenant Thong
Victor Zimmerman
Captain Turan
Edgar Edwards
Professor Karm
Michael Mark
Janda
Earl Dwire
Keedish
Harry C. Bradley
Count Korro
Sigurd Nilssen
Verna
Mimi Taylor
Professor Drok
Byron Foulger
Emperor Ming
Charles Middleton
Captain Sudan
William Royle
Ronal (uncredited)
Donald Curtis
Queen Fria (uncredited)
Luli Deste
General Lupi (uncredited)
Ben Taggart
Man with Thinking Brain (uncredited)
Allan Cavan
Man of Low Intellect (uncredited)
Jack Roper
Barin's Ship #5 Commander (uncredited)
Reed Howes
Guard Kroad (uncredited)
Charles Sherlock
Prince of the Rock People (uncredited)
Mala
King of the Rock People (uncredited)
Chief Yowlachie
Sonja
Anne Gwynne
Professor Gordon's Radio Operator (uncredited)
Jack Gardner
Professor Gordon's Assistant (uncredited)
Joey Ray
Ming's Soldier / Arborian Sentry (uncredited)
Roy Barcroft
Ming's Soldier (uncredited)
Lane Chandler
Gene Rizzi
Scientist (uncredited)
Wheaton Chambers
John Elliott
Jack George
Olga (uncredited)
Jean Brooks
Ming's Dancing Girl (uncredited)
Carmen D'Antonio
Dr. Zarkov
Frank Shannon
Ming's Gong Girl (uncredited)
Vivian Mason
(uncredited)
Ernie Adams
Clarice Sherry
Ming's Pilot (uncredited)
Tom Steele
Arborian Prison Guard (uncredited)
Eddie Parker
Guard (uncredited)
Bill Hunter
Robert Blair
Harold Daniels
Pat Gleason
Ernie Payson
Professor Gordon
John Hamilton
Paul Reed
Charles Waldron Jr.
Various Characters (voice) (uncredited)
Saul A. Goodkind
Dr. Frohmann
Herbert Rawlinson
Professor Arden
Tom Chatterton
Princess Aura
Shirley Deane
Captain Roka
Lee Powell
Director
Ford Beebe
Ray Taylor
Screenplay
George H. Plympton
Director of Photography
William A. Sickner
Supervising Editor
Barry Shipman
Art Direction
Harold H. MacArthur
Editor
Louis Sackin
Basil Dickey
Jerome Ash
Alvin Todd
Joseph Gluck
Associate Producer
Henry MacRae
Characters
Alex Raymond