La Religieuse is an 18th-century French novel by Denis Diderot. Completed in about 1780, it was first published by Friedrich Melchior Grimm in 1792 in his Correspondance littéraire in Saxony, and subsequently in 1796 in France.

Denis Diderot was a French philosopher, art critic, and writer, best known for serving as co-founder, chief editor, and contributor to the Encyclopédie along with Jean le Rond d'Alembert. He was a prominent figure during the Age of Enlightenment.