Richard Burton

as Marcellus Gallio

Jean Simmons

as Diana

Victor Mature

as Demetrius

Richard Boone

as Pontius Pilate

Leon Askin

as Abidor

Michael Rennie

as Peter

Dean Jagger

as Justus

Jay Robinson

as Caligula

Torin Thatcher

as Sen. Gallio

Betta St. John

as Miriam

Jeff Morrow

as Paulus

Ernest Thesiger

as Emperor Tiberius

Dawn Addams

as Junia

Bess Flowers

as Spectator at Caligula's court (uncredited)

Pamela Robinson

as Lucia (uncredited)

Michael Ansara

as Judas (uncredited)

Percy Helton

as Caleb, the wine merchant (uncredited)

Nicolas Koster

as Jonathan (uncredited)

Thomas Browne Henry

as Marius, the physician (uncredited)

Rosalind Ivan

as Julia (uncredited)

George E. Stone

as Gracchus (uncredited)

Jay Novello

as Tiro, slave trader (uncredited)

Hayden Rorke

as Bidder at slave auction (uncredited)

David Leonard

as Marcipor (uncredited)

Arthur Tovey

as Roman Soldier (uncredited)

Harry Shearer

as David (uncredited)

Mae Marsh

as Jerusalem Woman Aiding Demetrius (uncredited)

Ben Astar

as Cleander (uncredited)

Charles Fogel

as Citizen (uncredited)