The Gave de Pau is a river of south-western France and a left tributary of the Adour. It takes its name from the city Pau, through which it flows. The river is 180 kilometres (110mi) long, and its source is at the Cirque de Gavarnie in the Pyrenees mountains.
The Gave de Pau receives its main tributary, the Gave d'Oloron in Peyrehorade. The 10-kilometre (6mi) stretch between the mouth of the Gave d'Oloron and the confluence with the Adour is called Gaves Réunis (united Gaves).
The Gave de Pau flows through the following départements and towns: