The Rugii, also Rugians, Rygir, Ulmerugi, or Holmrygir, are an East Germanic tribe who migrates from southwest Norway to Pomerania around 100 CE, and from there to the Danube River valley.

They are allies of Attila until his death in 453, and settle n what is now Austria after the defeat of the Huns at Nedao in 453.The Rugians help Odoacer establish the Kingdom of Italy, and convert to Arianism by 482.

In 487 they suffer a crushing defeat in Vienna at the hands of Odoacer and his Herulian and Scirian followers.

They then join with the Ostrogothic army of Theodoric in its campaign to take over Italy in 488–493.

Within the Ostrogothic Kingdom, they keep their own administrators and avoided intermarriage with the Goths.

They disappear after Totila's defeat in the Gothic war.