Kadro (17)
Hedy LamarrTondelayo
Walter PidgeonMr. Harry Witzel
Frank MorganThe Doctor
Richard CarlsonMr. Langford
Reginald OwenSkipper of the Congo Queen
Henry O'NeillThe Reverend Dr. Roberts
Bramwell FletcherWilbur Ashley
Clyde CookTed, First Mate of the Congo QueenLeigh WhipperJim Fish
Oscar PolkUmeela
Darby JonesDarby
Richard AinleyMr. Worthing
Jim DavisSeaplane Pilot (uncredited)John BurtonJim Benson (uncredited)Delos JewkesNative Singer (uncredited)
Martin WilkinsNative Prisoner (uncredited)Ed AllenNative Drug Seller (uncredited)