Ann Corio
— Kuhlaya
Buster Crabbe
— Captain Gary Hart
Evelyn Wahl
— Frau Anna Lukas
Paul Bryar
— Sergeant Mike Jenkins
Milton Kibbee
— Dr. Thomas Harrigan
Arno Frey
— Herr George Lukas
Jess Lee Brooks
— Chief Selangi
Manart Kippen
— Major Renault - Commandant
James Adamson
— Johnny - a Native
Greco
— Greco, a Chimp (as Greco the Chimp)