Born ?, Died 260
Cornelius Publius Gaius Regalianus was a Dacian chosen emperor by the legions that had earlier raised Ingenuus as emperor in Sirmium. Originally Regalianus had fought with Aureolus against Ingenuus and defeated him. As an imperial usurper, Regalianus fought victoriously against the Sarmatians in northern Macedonia, but was defeated by Postumus for Gallienus a few weeks later. Regalianus was killed by his own soldiers shortly after.