The Saint Gildas Point is a rocky point located on the Côte de Jade, in the far west of the Pays de Retz, in the municipality of Préfailles (Loire-Atlantique), France. The point lies at the south of the Loire estuary and the port of Saint-Nazaire lies on the opposite, north, bank. The Baie de Bourgneuf and island of Noirmoutier lie to the south.

The Jade Coast constitutes the coastal fringe of the Pays de Retz in Loire-Atlantique, extending from the Loire estuary in the north to the Marais breton in the south, thus bordering the Bay of Bourgneuf on its southern part. Its jagged coasts and its numerous beaches are of summer tourist interest.