Wicked is a musical with music and lyrics by Stephen Schwartz and a book by Winnie Holzman. It is a loose adaptation of the 1995 Gregory Maguire novel Wicked: The Life and Times of the Wicked Witch of the West, which is in turn based on L. Frank Baum's 1900 novel The Wonderful Wizard of Oz and its 1939 Metro-Goldwyn-Mayer film adaptation.

Stephen Lawrence Schwartz is an American musical theatre composer and lyricist. In a career spanning over five decades, Schwartz has written such hit musicals as Godspell (1971), Pippin (1972), and Wicked (2003). He has contributed lyrics to a number of successful films, including Pocahontas (1995), The Hunchback of Notre Dame (1996), The Prince of Egypt, and Enchanted (2007).