Triumvirs after Caesar's death
- Octavius Caesar
- Mark Antony
- Lepidus
Conspirators against Caesar
- Marcus Brutus (Brutus)
- Cassius
- Casca
- Decius Brutus
- Cinna
- Metellus Cimber
- Trebonius
- Caius Ligarius
Tribunes
- Flavius
- Marullus
Roman Senate Senators
- Cicero
- Publius
- Popilius Lena
Citizens
- Calpurnia – Caesar's wife
- Portia – Brutus' wife
- Soothsayer – a person supposed to be able to foresee the future
- Artemidorus – sophist from Knidos
- Cinna – poet
- Cobbler
- Carpenter
- Poet (believed to be based on Marcus Favonios)[1]
- Lucius – Brutus' attendant
Loyal to Brutus and Cassius
- Volumnius
- Titinius
- Young Cato – Portia's brother
- Messala – messenger
- Varrus
- Clitus
- Claudio
- Dardanius
- Strato
- Lucilius
- Flavius (non-speaking role)
- Labeo (non-speaking role)
- Pindarus – Cassius' bondman
Other
- Caesar's servant
- Antony's servant
- Octavius' servant
- Messenger
- Other soldiers, senators, plebeians, and attendants