Grand Étang (large pond in English) is the largest lake on the island of Réunion, a French territory in the western Indian Ocean.

It lies in the commune of Saint-Benoît, close to La Plaine-des-Palmistes, in the eastern part of the island.

Its inflow is a short creek from the waterfall Cascade Biberon of the Bras d'Annette creek.

It was created by a lava flow acting as a natural dam afterwards.

This Réunion location article is a stub.