The Segovellauni (Gaulish: *Segouellaunoi, 'chiefs-of-victory') were a small Gallic tribe dwelling in the modern Drôme department, near the present-day city of Valence, during the Iron Age and the Roman period.
Little is known about the early history of the Segovellauni. After 121 BC, their territory was annexed to the province of Gallia Transalpina by the Roman Republic. In 62 BC, their oppidum Ventia was destroyed by the Roman legate Manlius Lentinus during the revolt of the Allobroges. By the 1st century AD, the Segovellauni were part of the Cavarian confederation.