The Gave de Larrau is a torrential river of the French Basque Country (Pyrénées-Atlantiques), in the southwest of France.

It is the left tributary of the river Saison, and considered its upper course by Sandre.

[1] Its name is due to the village of Larrau.

After joining the Uhaitxa, from Sainte-Engrâce, it forms the Saison in Licq-Athérey.

This article related to a river in France is a stub.