The Reynard cycle (French: Cycle de Renart; German: Reineke-Zyklus; Dutch: Reinaertcyclus) is a literary cycle of allegorical French, Dutch, English, and German fables largely concerned with Reynard, an anthropomorphic red fox and trickster figure.

In medieval European folklore and literature, the figure of Reynard is thought to have originated in Alsace-Lorraine folklore from where it spread to France, the Low Countries, and Germany. An extensive treatment of the character is the Old French Le Roman de Renart written by Pierre de Saint-Cloud around 1170, which sets the typical setting. Reynard has been summoned to the court of king Noble, or Leo, the Lion, to answer charges brought against him by Isengrim the Wolf. Other anthropomorphic animals, including Bruin the Bear, Baldwin the Ass, Tibert (Tybalt) the Cat, all attempt one stratagem or another. The stories typically involve satire whose usual butts are the aristocracy and the clergy, making Reynard a peasant-hero character.

The story of the preaching fox found in the Reynard literature was used in church art by the Catholic Church as propaganda against the Lollards. Reynard's principal castle, Maupertuis, is available to him whenever he needs to hide away from his enemies. Some of the tales feature Reynard's funeral, where his enemies gather to deliver maudlin elegies full of insincere piety, and which feature Reynard's posthumous revenge. Reynard's wife Hermeline appears in the stories, but plays little active role, although in some versions she remarries when Reynard is thought dead, thereby becoming one of the people he plans revenge upon. Isengrim (Alternate French spelling : Ysengrin) is Reynard's most frequent antagonist and foil, and generally ends up outwitted, though he occasionally gets revenge.