Richard Burton
Marcellus Gallio
Jean Simmons
Diana
Victor Mature
Demetrius
Richard Boone
Pontius Pilate
Leon Askin
Abidor
Michael Rennie
Peter
Dean Jagger
Justus
Jay Robinson
Caligula
Torin Thatcher
Sen. Gallio
Betta St. John
Miriam
Jeff Morrow
Paulus
Ernest Thesiger
Emperor Tiberius
Dawn Addams
Junia
Bess Flowers
Spectator at Caligula's court (uncredited)
