L'arbre enchanté, ou Le tuteur dupé (The Magic Tree, or, the Tutor Duped), Wq 42, is a one-act opéra comique by Christoph Willibald Gluck to a libretto based on the 1752 opéra-comique Le poirier ("The Peartree") with a text by Jean-Joseph Vadé. Vadé's libretto was based on a tale from Boccaccio's Decameron, as retold by Jean de La Fontaine. Gluck's opera was written for the name day of Emperor Francis I, premiering at the Schönbrunn Palace in Vienna on the evening of 3 October 1759, the anniversary of the death of Saint Francis of Assisi.