Flash Gordon
Buster Crabbe
Dr. Alexis Zarkov
Frank Shannon
Dale Arden
Jean Rogers
Dr. Alexis Zarkov
Frank Shannon
Ming the Merciless
Charles Middleton
Azura, Queen of Mars
Beatrice Roberts
Emperor Ming
Charles B. Middleton
'Happy' Hapgood
Donald Kerr
The Clay King
C. Montague Shaw
Tarnak
Wheeler Oakman
Prince Barin
Richard Alexander
The Martian Airfield Captain
Kenne Duncan
Talgon's Brother - a Martian Captain
Kane Richmond
Jack Mulhall
Lane Chandler
Anthony Warde
Ben Lewis
Flash's servant (uncredited)
Willie Best
Warner P. Richmond