Robert Taylor

Character: Marcus Vinicius

Deborah Kerr

Character: Lygia

Leo Genn

Character: Petronius

Peter Ustinov

Character: Nero

Patricia Laffan

Character: Poppaea

Finlay Currie

Character: Peter

Abraham Sofaer

Character: Paul

Marina Berti

Character: Eunice

Buddy Baer

Character: Ursus

Felix Aylmer

Character: Plautius

Nora Swinburne

Character: Pomponia

Ralph Truman

Character: Tigellinus

Norman Wooland

Character: Nerva

Peter Miles

Character: Nazarius

Geoffrey Dunn

Character: Terpnos

Nicholas Hannen

Character: Seneca

D.A. Clarke-Smith

Character: Phaon

Rosalie Crutchley

Character: Acte

John Ruddock

Character: Chilo

Arthur Walge

Character: Croton

Elspeth March

Character: Miriam

Strelsa Brown

Character: Rufia

Alfredo Varelli

Character: Lucan

Roberto Ottaviano

Character: Flavius

William Tubbs

Character: Anaxander

Pietro Tordi

Character: Galba

Marika Aba

Character: Dancer at Nero's Banquet (uncredited)

Adriano Ambrogi

Character: Wine Bibber (uncredited)

Anna Arena

Character: Woman (uncredited)

Alfred Baillou

Character: Christian Prisoner in Arena (uncredited)

Giacomo Barnas

Character: Senator (uncredited)

Scott R. Beal

Character: Fisherman (uncredited)

John Binns

Character: Officer (uncredited)

Francesca Biondi

Character: Slave Girl (uncredited)

Carlo Borelli

Character: Noble (uncredited)

Leslie Bradley

Character: Hasta (2nd Praetorian) (uncredited)

Alfred Brown

Character: Man (uncredited)

Valentino Bruchi

Character: Mirmillon (uncredited)

Dante Ciriaci

Character: Wine Bibber (uncredited)

Frank Colson

Character: Man (uncredited)

Adrienne Corri

Character: Young Christian Girl (uncredited)

Luca Cortese

Character: Old Man (uncredited)

David Craig

Character: Little Boy (uncredited)

Daniel de Jonghe

Character: Apostle (uncredited)

Liana Del Balzo

Character: Woman (uncredited)

Jack Del Rio

Character: Apostle (uncredited)

Lia Di Leo

Character: Pedicurist (uncredited)

Franco Fantasia

Character: Man (uncredited)

Cesare Fasulo

Character: Noble (uncredited)

Al Ferguson

Character: Apostle (uncredited)

Enzo Fiermonte

Character: Mounted Captain (uncredited)

Enrico Formichi

Character: Man with Wine Cup (uncredited)

John Fostini

Character: Young Unbaptized Man (uncredited)

Dino Galvani

Character: Senator (uncredited)

Richard Garrick

Character: Slave (uncredited)

Jack George

Character: Fisherman (uncredited)

Carlo Ghisini

Character: Guard (uncredited)

Trudy Glassford

Character: Woman (uncredited)

Joan Griffiths

Character: Woman (uncredited)

Robin Hughes

Character: Christ (voice) (uncredited)

Adam Jennette

Character: Man (uncredited)

Philip Kieffer

Character: Apostle (uncredited)

Gipsy Kiss

Character: Slave Girl (uncredited)

Lee Kresel

Character: Man (uncredited)

Richard Larke

Character: Guard (uncredited)

Sophia Loren

Character: Lygia's Slave (uncredited)

Giovanni Lovatelli

Character: Banquet Man (uncredited)

Helena Makowska

Character: Older Woman (uncredited)

Anna Mancini

Character: Nubian Slave Girl (uncredited)

Michael Mark

Character: Fisherman (uncredited)

Clelia Matania

Character: Parmenida (uncredited)

Richard McNamara

Character: Legionnaire (uncredited)

Harriet Medin

Character: Woman (uncredited)

Dario Michaelis

Character: Lydia's Guard (uncredited)

Ernesto Molinari

Character: Fisherman (uncredited)

John Myhers

Character: Guard (uncredited)

Vincent Neptune

Character: Apostle (uncredited)

Anna Maria Padoan

Character: Young Unbaptized Woman (uncredited)

Louis Payne

Character: Apostle (uncredited)

Walter Pidgeon

Character: Narrator (voice) (uncredited)

Aldo Pini

Character: Headkeeper (uncredited)

Alberto Plebani

Character: Steward (uncredited)

Paola Quattrini

Character: Crying Girl (uncredited)

Dino Raffaelli

Character: Man (uncredited)

George Restivo

Character: Apostle (uncredited)

Alfredo Rizzo

Character: Hairdresser (uncredited)

Amerigo Santarelli

Character: Guard Tying the Christians (uncredited)

Leonardo Scavino

Character: Man (uncredited)

Alessandro Serbaroli

Character: Officer (uncredited)

Bud Spencer

Character: Imperial Guard (uncredited)

Raffaele Tana

Character: Man (uncredited)

Elizabeth Taylor

Character: Christian Prisoner in Arena (uncredited)

William Taylor

Character: Guard Captain / Marcus' Guard (uncredited)

Michael Tor

Character: Centurian (uncredited)

Giuseppe Tosi

Character: Wrestler (uncredited)

Carlo Tricoli

Character: Apostle (uncredited)

Renato Valente

Character: Guard (uncredited)

Scilla Vannucci

Character: White Slave Girl (uncredited)

Giuseppe Varni

Character: Hairdresser (uncredited)

Dianora Veiga

Character: Slave Girl (uncredited)

Harry J. Vejar

Character: Fisherman (uncredited)

Romilda Villani

Character: Slave Girl (uncredited)

Maria Zanoli

Character: Woman (uncredited)

Christopher Lee

Character: Chariot Driver (uncredited)

Filippo Spoletini

Character: (uncredited)