Ermanaric (; ; ; ; died 376) was a Greuthungian Gothic King who before the Hunnic invasion evidently ruled a sizable portion of Oium, the part of Scythia inhabited by the Goths at the time. He is mentioned in two Roman sources; the contemporary writings of Ammianus Marcellinus and in Getica by the 6th-century historian Jordanes. Modern historians have postulated that Ermanaric at one point ruled a realm stretching from the Baltic Sea to the Black Sea as far eastwards as the Ural Mountains.