Tiberius Claudius Pompeianus[1] (Greek: Πομπηιανός; c. 125 – 193 AD) was a politician and military commander during the 2nd century in the Roman Empire.

He was a member of the imperial family due to his marriage to Lucilla, a daughter of Marcus Aurelius, and was a key figure during the emperor's reign.

[3] Following the completion the Parthian campaign, Emperor Marcus Aurelius appointed him military governor of Pannonia Inferior on the empire's northern frontier along the Danube River.

Pompeianus' military skills earned him the confidence of Marcus Aurelius and he quickly became one of the Emperor's closest advisors.

As the emperors returned to their winter quarters in Aquileia, Lucius Verus fell ill and died in January 169.

Under his guidance, the exiled senator and fellow Parthian war veteran Pertinax was recalled and joined Pompeianus on his military staff.

[I 3] Marcus Aurelius died in 180 AD, and his 18-year-old son Commodus, Pompeianus' brother-in-law, was proclaimed Roman emperor.

[13] The Praetorian Guard then proclaimed Pertinax the emperor, but they assassinated him after only 87 days for attempting to impose order upon the long-undisciplined unit.

Senator Didius Julianus bribed the Praetorian Guard to proclaim him emperor, but had difficulty garnering support within the ranks of his own troops.

[16] Russell Crowe's character Maximus Decimus Meridius in the 2000 film Gladiator is loosely based on Pompeianus and others, including Narcissus.