Publius Memmius Regulus (died AD 61) was a Roman senator active during the reign of the emperor Tiberius.
Shortly after his accession, Caligula compelled Regulus to divorce Paulina, who in AD 38 became the emperor's third wife.
[8] Regulus and his colleague, Trio, entered their consulship on the Kalends of October, AD 31, and served until the end of the year.
[9] Their magistracy saw the downfall of Sejanus, the notorious plotter and sycophant of Tiberius, whom Regulus personally conducted to prison.
[11][12] After the death of Tiberius, his successor, Caligula, ordered Regulus to remove the statue of Jupiter by Phidias at Olympia, and bring it to Rome.