Ulpia Severina was Roman empress as the wife of Roman emperor Aurelian from c. 270 to 275. Severina is unmentioned in surviving literary sources and known only from coinage and inscriptions, and as a result, very little is known about her. Her nomen Ulpia suggests that she may have been related either to Emperor Trajan (r. 98–117) or the usurper Laelianus (r. 269), as they share the same nomen, and perhaps from Dacia, where the name was common. It is not known when she married Aurelian, but it might have been before he became emperor. She was probably proclaimed Augusta in the autumn of 274.
Aurelian was murdered in September/October 275 and his successor, Tacitus, was proclaimed emperor only after a brief interregnum, lasting somewhere between five and eleven weeks.