Wicked is a musical with music and lyrics by Stephen Schwartz and a book by Winnie Holzman. It is based on the 1995 Gregory Maguire novel Wicked: The Life and Times of the Wicked Witch of the West, a parallel novel of the 1939 film The Wizard of Oz and L. Frank Baum's classic story The Wonderful Wizard of Oz. The musical is told from the perspective of the witches of the Land of Oz; its plot begins before and continues after Dorothy's arrival in Oz from Kansas and includes several references to the 1939 film and Baum's novel. Wicked tells the story of two unlikely friends, Elphaba (the Wicked Witch of the West) and Glinda (the Good Witch of the North), who struggle through opposing personalities and viewpoints, rivalry over the same love-interest, reactions to the Wizard's corrupt government, and, ultimately, Elphaba's public fall from grace.

The original Broadway production won three Tony Awards and 6 Drama Desk Awards whilst its cast album received a Grammy Award. It has since celebrated its ninth anniversary on October 30, 2012, making Wicked the 12th longest-running Broadway show in history.