The Hermunduri, Hermanduri, Hermunduli, Hermonduri, or Hermonduli were an ancient Germanic tribe, who occupied an inland area near the source of the Elbe river, around what is now Bohemia from the first to the third century, though they have also been speculatively associate with Thuringia further north. According to an old proposal based on the similarty of the names, the Thuringii may have been the descendants of the Hermunduri. At times, they apparently moved to the Danube frontier with Rome. Claudius Ptolemy mentions neither tribe in his geography but instead the Teuriochaemae, who may also be connected to both.

The approximate positions of some Germanic peoples reported by Graeco-Roman authors in the 1st century. Suevian peoples in red, and other Irminones in purple.