Lucius Verus (Latin: Lucius Aurelius Verus Augustus; 15 December 130 – 169) was the co-emperor of Rome with his adoptive brother Marcus Aurelius from 161 until his own death in 169. Born Lucius Ceionius Commodus, with the same name as his father, he became Lucius Aelius Commodus when the latter was adopted by Hadrian, since both father and son had to change their names accordingly. When he was adopted by Caesar Antoninus Pius in February 138, his name was changed to L. Aelius Aurelius Commodus. His name changed again following his ascension in 161. During his reign, the Roman Empire defeated a revitalized Parthia in the east: Verus's general, Avidius Cassius, sacked their capital, Ctesiphon, in 164. He was deified by the Roman Senate as the Divine Verus (Divus Verus).

Lucius Verus was the first-born son to Avidia Plautia and Lucius Aelius Caesar, the first adopted son and heir of Roman Emperor Hadrian (76–138). He was born and raised in Rome. Verus had another brother, Gaius Avidius Ceionius Commodus, and two sisters, Ceionia Fabia and Ceionia Plautia. His maternal grandparents were the Roman senator, Gaius Avidius Nigrinus, and the unattested noblewoman Ignota Plautia. Although his adoptive paternal grandparent was the Roman Emperor Hadrian, his biological paternal grandparents were the consul Lucius Ceionius Commodus and noblewoman Aelia or Fundania Plautia.

When his father died in early 138, Hadrian chose Antoninus Pius (86–161) as his successor. Antoninus was adopted by Hadrian on the condition that Verus and Hadrian’s great-nephew Marcus Aurelius be adopted by Antoninus as his sons and heirs.

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