The Allobroges (Ancient Greek: Άλλόβριγες, Άλλόβρυγες, Άλλόβρoγες) were a Gallic tribe of ancient Gaul, located between the Rhône River and the Lake of Geneva in what later became Savoy, Dauphiné, and Vivarais. Their cities were in the areas of modern-day Annecy, Chambéry and Grenoble, the modern departement of Isère, and modern Switzerland. Their capital was today's Vienne.
The location of the Allobroges is deduced from mention of them in ancient writings.Caesar says that the Segusiavi were the "first tribe outside the province" (Gallia Transalpina) on "the far side of the Rhône" and that he marched from the Allobroges to the Segusiavi; that is, the former occupied the east bank of the Rhône. On the north, the Rhône divided the Helvetii from the Allobroges; i.e., the latter were on the south bank of the river and Lake Léman from which it flows. Geneva was Allobrogian. Caesar says the Allobroges were "recently subdued."
The first recorded reference to the Allobroges is from the Greek historian Polybius in 150-130 BC. He tells how they unsuccessfully resisted Hannibal when he crossed the Alps in 218 BC.