Candes-Saint-Martin (French pronunciation: [kɑ̃d sɛ̃ maʁtɛ̃]) is a commune in the Indre-et-Loire department, central France. It overlooks the confluence of the Vienne and Loire rivers from a steep hill on the left bank of the Loire, and marks the boundary between the modern departments of Indre-et-Loire to the east, and Maine-et-Loire to the west.