Stuart Burge Director Charlton Heston Marc Antony Actor John Gielgud Julius Caesar Actor Jason Robards Marcus Brutus Actor Richard Johnson Caius Cassius Actor Robert Vaughn Servilius Casca Actor Richard Chamberlain Octavius Caesar , Augustus Actor Diana Rigg Portia Actor Jill Bennett Calpurnia Actor Christopher Lee Artemidorus Actor Alan Browning Marullus Actor Norman Bowler Titinius Actor Andrew Crawford Volumnius Actor David Dodimead Marcus Lepidus Actor Peter Eyre Cinna the Poet Actor Edwin Finn Publius Actor Derek Godfrey Decius Brutus Actor Michael Gough Metellus Cimber Actor Paul Hardwick Messala Actor Laurence Harrington Carpenter Actor Thomas Heathcote Flavius Actor Ewan Hooper Strato Actor Robert Keegan Lucilius Actor Andre Morell Cicero Actor David Neal Cinna the Conspirator Actor Preston Lockwood Trebonius Actor John Moffatt Popilius Lena Actor Steven Pacey Lucius Actor Ron Pember Cobbler Actor John Tate Clitus Actor Damien Thomas Pindarus Actor Peter Snell Producer Robert Furnival Screenwriter