Saint Prosper may refer to:

Prosper of Aquitaine (c. 390–c. 455), Christian writer and disciple of Saint Augustine of Hippo Prosper of Reggio (died 466), Italian saint

Saint-Prosper may refer to:

Saint-Prosper, Chaudière-Appalaches, Quebec, Canadian municipality Saint-Prosper-de-Champlain, Quebec, Canadian municipality

See also Prosper (disambiguation)