King Leonidas
Richard Egan
Themistocles of Athens
Ralph Richardson
Demaratus
Ivan Triesault
Megistias
Charles Fawcett
Myron
Michalis Nikolinakos
Xenathon
Sandro Giglio
Toris
Anna Raftopoulou
Samos
Dimos Starenios
Demophilus of Thespiae
Yorgos Moutsios
Grellas
Nikos Papakonstantinou
Kostas Baladimas
Zannino
Ellas
Diane Baker
Ephialtes
Kieron Moore
Agathon the Spartan Spy
John Crawford
Phylon
Barry Coe
Xerxes
David Farrar
Artemisa
Anne Wakefield
Hydarnes
Donald Houston
Gorgo
Anna Synodinou
Pentheus
Robert Brown
First Delegate
Laurence Naismith
Director of Photography
Geoffrey Unsworth
Director
Rudolph Maté
Original Music Composer
Manos Hatzidakis
Writer
Gian Paolo Callegari
Remigio Del Grosso