Marcus Aurelius Severus Alexander (1 October 208 - March 235), also known as Alexander Severus,, and likely referenced in Hebrew sources as Aseverus, son of Antonius, was Roman emperor from 222 until 235. He was the last emperor from the Severan dynasty and, at the age of 13, became the youngest sole emperor of the united Roman Empire.

Alexander became emperor at age 13, succeeding his slain cousin,