Marc Antony

Marlon Brando

Brutus

James Mason

Cassius

John Gielgud

Julius Caesar

Louis Calhern

Casca

Edmond O'Brien

Calpurnia

Greer Garson

Portia

Deborah Kerr

Marullus

George Macready

Marullus

George Macready

Flavius

Michael Pate

Soothsayer

Richard Hale

Cicero

Alan Napier

Titinius

John Parrish

Decius Brutus

John Hoyt

Cinna

William Cottrell

Metellus Cimber

Tom Powers

Lucius

John Hardy

Trebonius

Jack Raine

Ligarius

Ian Wolfe

Artemidorus

Morgan Farley

Popilius Lena

Victor Perry

Servant to Antony

Bill Phipps

Octavius Caesar

Douglass Watson

Publius

Lumsden Hare

Lepidus

Douglass Dumbrille

Pindarus

Michael Ansara

Messala

Dayton Lummis

Strato

Edmund Purdom

Lucilius

Rhys Williams

A Carpenter

John Doucette

First Citizen of Rome

Paul Guilfoyle

Varro

John Lupton

Third Citizen of Rome

Lawrence Dobkin

Fourth Citizen of Rome

Jo Gilbert

Claudius

Preston Hanson

Clitus

Joseph Waring

Dardanius

Steve Roberts

Servant to Caesar

Chester Stratton

Volumnius

Thomas Browne Henry

Cinna the Poet

O.Z. Whitehead

Popilius Lena

Vic Perry

Officer to Octavius

Michael Tolan

Servant to Caesar

Chet Stratton

Lucilius

Rhys Williams

Varro

John Lupton

Clitus

Joe Waring

Citizen of Rome

David Bond

Dardanius

Stephen Roberts

Citizen of Rome

Ann Tyrrell

Citizen of Rome

John O'Malley

Citizen of Rome

Oliver Blake

Citizen of Rome

Alvin Hurwitz

Citizen of Rome

Donald Elson

Citizen of Rome

John Call

Cobbler

Ned Glass

Director

Joseph L. Mankiewicz