Marlon Brando
Marc Antoine
James Mason
Brutus
John Gielgud
Cassius
Louis Calhern
Jules César
Edmond O'Brien
Casca
Greer Garson
Calpurnia
Deborah Kerr
Portia
George Macready
Marullus
Michael Pate
Flavius
Richard Hale
A Soothsayer
Alan Napier
Cicero
John Hoyt
Decius Brutus
Tom Powers
Metellus Cimber
Jack Raine
Trebonius
Ian Wolfe
Ligarius
Morgan Farley
Artemidorus
Douglass Dumbrille
Lepidus
Michael Ansara
Pindarus
Edmund Purdom
Strato
Paul Guilfoyle
First Citizen of Rome
John Doucette
A Carpenter, Second Citizen
Lawrence Dobkin
Third Citizen of Rome
Lumsden Hare
Publius
Michael Tolan
Officer to Octavius
Rhys Williams
Lucilius
John Lupton
Varro
John Parrish
Titinius
Thomas Browne Henry
Volumnius
David Bond
Citizen of Rome
Ann Tyrrell
Citizen of Rome
Oliver Blake
Citizen of Rome
Donald Elson
Citizen of Rome
William Cottrell
Cinna
Bill Phipps
Servant to Antony
Douglass Watson
Octavius Caesar
Dayton Lummis
Messala
Jo Gilbert
Fourth Citizen of Rome
John Hardy
Lucius
Chester Stratton
Servant to Caesar
Vic Perry
Popilius Lena
Joe Waring
Clitus
Stephen Roberts
Dardanius
John O'Malley
Citizen of Rome
Alvin Hurwitz
Citizen of Rome
John Call
Citizen of Rome
Rudy Germane
Citizen of Rome (uncredited)
