Third and last emperor of the Flavian dyansty, Domitian (51-96 CE) was the youngest son of Vespasian and spent most of his youth in the shadow of his more accomplished brother Titus, who earned his renown during the First Jewish-Roman War. When his father became emperor at the end of the Year of the Four Emperors in 69 CE, Titus was given a great many offices while Domitian held honours but no responsibilities. This would go on for many years, until his brother, succeeding his father in 79 CE, himself died unexpectedly from illness in 81 CE. Domitian was suddenly declared emperor by the Praetorian Guard.

During his reign, Domitian strengthened the Roman economy, expanded the Empire's border defenses and initiated a massive building program to restore the debilitated Rome. Further wars were fought in Britain. Domitian ruled more autocratically than previous emperors, seeing himself as the new Augustus, and formed a cult of personality around himself, making him popular with the people but considered tyrannical by the Senate.

After 15 years in power, longer than any emperor since Tiberius, Domitian was assassinated in 96 CE by court officials. His death ended the Flavian dynasty and he was succeeded by his advisor Nerva, his memory condemned to oblivion by the Senate.