The Thuringii or Toringi were a Germanic tribe which appeared late during the Völkerwanderung in the Harz Mountains of central Germania around 280, in a region which still bears their name to this day — Thuringia. They evidently filled a void left when the previous inhabitants — the Alamanni — migrated south to the region named after them, Alemannia. They may have been remnants of the Alemannic confederation, or simply another lesser tribe. Some have suggested that they were the remnants of the Hermanduri, that last part of whose name (-duri) was corrupted (-thuri) and afterwards suffixed with -ing, meaning "descendants of (the [Herman]duri)".

The Thuringii established an empire in the late 5th century. It reached its territorial peak in the first half of the 6th before it was conquered by the Franks in 531–532. Examination of Thuringian gravesites reveal cranial features which suggest the strong presence of Hunnic women or slaves, perhaps indicating that many Thuringians took Hunnic wives or Hunnic slaves following the collapse of the Hunnic Empire. There is also evidence from jewellery found in graves that the Thuringians sought marriages with Ostrogothic and Lombard women.