Munatia Plancina (died 33 AD) was a Roman noblewoman who lived during the reigns of Augustus and Tiberius.
[3] Munatia Plancina was also a close friend of Livia, the wife of the Emperor Augustus and mother of his successor, Tiberius.
[4] Tacitus goes on to say that Livia secretly ordered Munatia Plancina to take this action against Germanicus and Agrippina.
[5][6] Munatia Plancina was supposed to have been in contact with a Syrian called Martina who prepared the poison to be used to kill Germanicus.
[14] A recently discovered senate resolution has confirmed that Munatia Plancina owed her acquittal to a recommendation of Tiberius, who had been persuaded by Livia to act in this way.
[16][17] It has been noted that the family of Munatia Plancina was poorly regarded during the reign of Tiberius because of the very negative characterization of her grandfather, Lucius Munatius Plancus, by the historian Marcus Velleius Paterculus.