Brière Regional Natural Park is a protected area in the Pays de la Loire region of France. It covers a total area of 40,000 hectares with a core of wetland, the Grande Brière, covering approximately 7,000 hectares. The area was officially designated as a regional natural park in 1970.
The park includes the following member communes:
Assérac
Crossac
Donges
Guerande
Herbignac
La Baule-Escoublac
La Chapelle-des-Marais
Missillac
Montoir-de-Bretagne
Pornichet
Prinquiau
Saint-André-des-Eaux
Saint-Joachim
Saint-Lyphard
Saint-Malo-de-Guersac
Saint-Molf
Saint-Nazaire
Sainte-Reine-de-Bretagne
Trignac