Marlon Brando

Mark Antony

James Mason

Brutus

John Gielgud

Cassius

Louis Calhern

Julius Caesar

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