Roddy McDowall

Octavian - Caesar Augustus

Andrew Keir

Agrippa

Martin Landau

Rufio

Francesca Annis

Eiras

Michael Hordern

Cicero

Martin Benson

Ramos

George Cole

Flavius

Marne Maitland

Euphranor

Rex Harrison

Julius Caesar

Robert Stephens

Germanicus

Kenneth Haigh

Brutus

Richard Burton

Marcus Antonius

Hume Cronyn

Sosigenes

Elizabeth Taylor

Cleopatra

Pamela Brown

High Priestess

Cesare Danova

Apollodorus

Grégoire Aslan

Pothinus

John Doucette

Achillas

John Hoyt

Cassius

Carroll O'Connor

Casca

Andrew Faulds

Canidius

Michael Gwynn

Cimber

Peter Grant

Palace Guard (uncredited)

Richard O'Sullivan

Pharaoh Ptolemy XIII

Joseph L. Mankiewicz

Director

Peter Levathes

Executive Producer