Gregory Maguire (born June 9, 1954) is an American novelist. He is the author of Wicked, Confessions of an Ugly Stepsister, and several dozen other novels for adults and children. Many of Maguire's adult novels are inspired by classic children's stories. Maguire published his first novel, The Lightning Time, in 1978. Wicked, published in 1995, was his first novel for adults. It was adapted into a popular Broadway musical in 2003, which was later adapted into a two-part musical film series. The first film was released in 2024, and the second film is scheduled to be released in 2025.