Buster Crabbe

as Flash Gordon

Jean Rogers

as Dale Arden

Frank Shannon

as Dr. Zarkov

Charles Middleton

as Emperor Ming

Beatrice Roberts

as Queen Azura

Donald Kerr

as Happy Hapgood

Richard Alexander

as Prince Barin

C. Montague Shaw

as Clay King

Wheeler Oakman

as Tarnak

Kane Richmond

as Stratosled Pilot (Talgon's Brother)

Warner Richmond

as Zandar

Anthony Warde

as King Turan of the Forest People

Kenne Duncan

as Airdrome Captain

Jack Mulhall

as Bomber Captain

Lane Chandler

as Flight Commander

Ben Lewis

as Professor