The Heuneburg is the site of a large early Iron Age (Hallstatt culture) hill fort near Riedlingen , Württemberg, in Germany.

The occupants of the hill fort had strong links with the Mediterranean and imported wine in amphorae and exotic pottery from the Greek colony of Massilia, modern day Marseilles. During the sixth century BC the defences of the fort were even remodelled along the lines of Greek fortresses, with mudbrick bastions on stone foundations. It has been suggested that this represents the Celtic city of Pyrene mentioned by Herodotus (Book 2:33).

This hill fort was destroyed in the later sixth century BC and then rebuilt with three circuits of walls. Several high status burials are located nearby dating to the same period including the rich barrow at Hohmichele . This fort was also destroyed early in the fourth century BC and the site was abandoned until the early medieval period when its strategic importance was rediscovered.