The Immoralist (French: L'Immoraliste) is a novel by André Gide, published in France in 1902. The Immoralist is a recollection of events that Michel narrates to his three visiting friends. One of those friends solicits job search assistance for Michel by including in a letter to Monsieur D. R., Président du Conseil, a transcript of Michel's first-person account.

Important points of Michel's story are his recovery from tuberculosis; his attraction to a series of Arab boys and to his estate caretaker's son; and the evolution of a new perspective on life and society. Through his journey, Michel finds a kindred spirit in the rebellious Ménalque.