The Nantuates or Nantuatae (Gaulish: Nantuatis, 'those of the valley') were a Gallic tribe dwelling around present-day Massongex, in the modern Canton of Valais (Switzerland) and adjacent areas of France, during the Iron Age and the Roman period.
Along with the Veragri, Seduni and Uberi, they were part of the Vallenses, a group of tribes living between Lake Geneva and the Pennine Alps.
[10][8] Their territory was located northeast of the Allobroges, north of the Veragri, west of the Seduni, and south of the Helvetii.
Named after the Celtic god Taranis, it probably hosted a sanctuary dedicated to the deity, later identified with Jupiter in Roman times through interpretatio romana.
[12] They are mentioned by Pliny the Elder as one of the Alpine tribes conquered by Rome in 16–15 BC, and whose name was engraved on the Tropaeum Alpium.