Carinus (Latin: Marcus Aurelius Carinus Augustus; died 285), was Roman Emperor 282 to 285. The elder son of emperor Carus, he was appointed Caesar and co-emperor of the western portion of the empire upon his father's accession. Official accounts of his character and career have been filtered through the propaganda of his successful opponent, Diocletian.

He fought with success against the Germanic Quadi tribes, but soon left the defence of the Upper Rhine to his legates and returned to Rome, where the surviving accounts, which demonize him, assert that he abandoned himself to all kinds of debauchery and excess. More certainly, he also celebrated the annual ludi Romani on a scale of unexampled magnificence.

After the death of Carus, the army in the East demanded to be led back to Europe, and Numerian, the younger son of Carus, was forced to comply. During a halt at Chalcedon, Numerian was found dead, and Diocletian, commander of the body-guards, claimed that Numerian had been assassinated and was proclaimed emperor by the soldiers.