Gregory Maguire 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.

Wicked: The Life and Times of the Wicked Witch of the West is an American novel published in 1995, written by Gregory Maguire with illustrations by Douglas Smith. It is the first in The Wicked Years series, and was followed by Son of a Witch, A Lion Among Men, and Out of Oz. In 2003, it was adapted as the Tony Award-winning Broadway musical Wicked. The musical is in the process of being adapted into a two-part feature film, with the first film scheduled to be released in November 2024 and the second film in November 2025.