Lucilla

Sophia Loren

Marcus Aurelius

Alec Guinness

Livius

Stephen Boyd

Commodus

Christopher Plummer

Timonides

James Mason

Verulus

Anthony Quayle

Sohamus

Omar Sharif

Ballomar

John Ireland

Cleander

Mel Ferrer

Polybius

Andrew Keir

Tauna (uncredited)

Gabriella Licudi

Julianus

Eric Porter

Lentulus

Rafael Calvo

Senator

Finlay Currie

Claudius

Peter Damon

Niger

Douglas Wilmer

Victorinus

George Murcell

Virgilianus

Norman Wooland

Cornelius

Michael Gwynn

Marius (uncredited)

Guy Rolfe

Marcellus

Virgílio Teixeira

Helva

Lena von Martens

Barbarian (uncredited)

Roland Carey

Part of Court (uncredited)

Margaret Fuller

le frère de Livius

Jeffrey O'Kelly

Gladiators Trainer (uncredited)

Mario Ghignone

Barbarian (uncredited)

Friedrich von Ledebur

Soldier on a horse (uncredited)

José Terrón

Opening Narrator (voice / uncredited)

Robert Rietti

Roman Citizen, Slave Woman (uncredited)

Patricia Wright

Opening narration

Robert Rietty