John Agar

~ as ~

Dr. Roger Bentley

Cynthia Patrick

~ as ~

Adad

Hugh Beaumont

~ as ~

Dr. Jud Bellamin

Alan Napier

~ as ~

Elinu, the High Priest

Nestor Paiva

~ as ~

Prof. Etienne Lafarge

Phil Chambers

~ as ~

Dr. Paul Stuart

Rodd Redwing

~ as ~

Nazar

Robin Hughes

~ as ~

First Officer

Eddie Parker

~ as ~

Mole Person

Frank Baxter

~ as ~

Self (as Dr. Frank C. Baxter)