All Cast
Hedy Lamarr
Tondelayo
Walter Pidgeon
Mr. Harry Witzel
Frank Morgan
The Doctor
Richard Carlson
Mr. Langford
Reginald Owen
Skipper of the Congo Queen
Henry O'Neill
The Reverend Dr. Roberts
Bramwell Fletcher
Wilbur Ashley
Clyde Cook
Ted, First Mate of the Congo Queen
Leigh Whipper
Jim Fish
Oscar Polk
Umeela
Darby Jones
Darby
Richard Ainley
Mr. Worthing
Jim Davis
Seaplane Pilot (uncredited)
John Burton
Jim Benson (uncredited)
Delos Jewkes
Native Singer (uncredited)
Martin Wilkins
Native Prisoner (uncredited)