Marcus Peducaeus Plautius Quintillus (died 205) was a Roman noble closely related by birth, adoption, and marriage to the Nerva-Antonine emperors.
When Plautius married Annia Aurelia Fadilla, he became son-in-law to Marcus Aurelius and brother-in-law to Commodus.
After the assassination of Commodus, in December 192, the civil war that ensued saw five different men assume the throne; Plautius was not one of them.
When Septimius Severus, the victor of the civil war, advanced on Rome, Didius Julianus proposed that the Senate and the Vestal Virgins meet Severus' advancing army as supplicants, a proposal Plautius intervened forcefully against.
Then preparing to take his own life, he burned incense before uttering his last words: "I make the same prayer that Servianus made for Hadrian" — that is, that Severus would one day wish to die, but would be unable to.