Roman emperor Iulius Saturninus (died 280) was a Gaul by birth (others have him as a Moor) and was a friend of the emperor Probus. He was appointed governor of Syria by Probus (ca. 279) and had the purple forced on him by his own troops.

After Probus had left Syria for the Rhine in 280, unruly soldiers and the people of Alexandria forced a reluctant Saturninus to accept imperial office. He fled from Alexandria to escape the pressure but changed his mind in Palestine and proclaimed himself emperor. Before Probus could respond to the threat, Saturninus was dead, killed by his own troops.