Vienne (French: [vjɛn] ; Arpitan: Vièna) is a town in southeastern France, located 35 kilometres (22 mi) south of Lyon, at the confluence of the Gère and the Rhône. It is the fourth-largest commune in the Isère department, of which it is a subprefecture alongside La Tour-du-Pin. Vienne was a major centre of the Roman Empire under the Latin name Vienna.
Vienne was the capital of the Allobroges, a Gallic people, before its conquest by the Romans. Transformed into a Roman colony in 47 BC under Julius Caesar, it became a major urban centre, ideally located along the Rhône, then a major axis of communication. Emperor Augustus banished Herod the Great's son, the ethnarch Herod Archelaus to Vienne in 6 AD.