Dictator is a historical novel by British author Robert Harris, published in 2015, which concludes his trilogy about the life of the Roman lawyer, politician and orator, Cicero (106–43 BC).

It is both a biography of Cicero and a tapestry of Rome in the time of Pompey, Crassus, Cato, Caesar, Clodius and ultimately Octavian.

It begins with Cicero fleeing Publius Clodius Pulcher and his mob in Rome and going into exile in Thessalonica.

Back in Rome, he attempts to revive the Roman Republic, but the forces against this are too strong.

Tiro also relates family and personal matters, such as death and divorce, during Cicero's final years.