Moustiers-Sainte-Marie, or simply Moustiers, (Mostiers Santa Maria in Occitan) is a commune in the Alpes-de-Haute-Provence department in southeastern France, a part of the Provence-Alpes-Côte d'Azur region and one of the "Most beautiful villages of France".

It lies at the western entrance to the Gorges du Verdon. The village has been a centre of the pottery trade, especially faïence, for centuries.

The village clings a hundred or so metres up the side of a limestone cliff. A spring flows out of the cliff, creating a waterfall directly out of the centre of town. At twilight, the sun strikes the south-facing cliff, creating a diffuse pink light for a few minutes on clear days.