Decrius Calpurnianus (died Autumn 48 AD) was a Roman Eques of the early Roman imperial period.
Decrius Calpurnianus was praefectus vigilum.
He was executed, according to the Roman historian Tacitus, as well as several other distinguished Romans, as a confidant in the adultery committed by the empress Valeria Messalina with the young senator Gaius Silius in AD 48.
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