Charlton Heston

as Harry Steel

Robert Young

as Stanley Moorehead

Nicole Maurey

as Elena Antonescu

Thomas Mitchell

as Ed Morgan

Glenda Farrell

as Mrs. Winston

Michael Pate

as Pachacutec

Leon Askin

as Anton Marcu

William Henry

as Phillip Lang

Kurt Katch

as Man with rifle

Edward Colmans

as Col. Emilio Cardoza

Yma Sumac

as Kori-Tica

Alvy Moore

as Young Man at Bar (uncredited)

Marion Ross

as Miss Morris (uncredited)