JULIUS CAESAR, Roman statesman and general OCTAVIUS, Triumvir after Caesar's death, later Augustus Caesar, first emperor of Rome
MARCUS ANTONIUS, general and friend of Caesar, a Triumvir after his death
LEPIDUS, third member of the Triumvirate
MARCUS BRUTUS, leader of the conspiracy against Caesar
CASSIUS, instigator of the conspiracy
CASCA, TREBONIUS, LIGARIUS, DECIUS BRUTUS, METELLUS CIMBER, CINNA, conspirators against Caesar
CALPURNIA, wife of Caesar
PORTIA, wife of Brutus
CICERO, PUBLIUS, POPILIUS LENA, senators
FLAVIUS, tribune
MARULLUS, tribune
CATO, LUCILIUS, TITINIUS, MESSALA, VOLUMNIUS, supporters of Brutus
ARTEMIDORUS, a teacher of rhetoric
CINNA, a poet
VARRO, CLITUS, CLAUDIUS, STRATO, LUCIUS, DARDANIUS, servants to Brutus
PINDARUS, servant to Cassius
Ghost of Caesar
A Soothsayer
A Poet
Senators, Citizens, Soldiers, Commoners, Messengers, and Servants

SCENE: Rome, the conspirators' camp near Sardis, and the plains of Philippi.