- Wicked: The Life and Times of the Wicked Witch of the West (1995)
- Son of a Witch (2005)
- A Lion Among Men (2008)
- Out of Oz (2011)
- Hiddensee (2017)
Books in the Wicked Years series by Gregory Maguire:
- Mirror Mirror (2003)
- The Lion of Oz and the Badge of Courage (2004)
- A Curious Updraft (2009)
Other Oz-related books by Gregory Maguire:
- Wicked: The Grimmerie: A Collection of Stories (1998)
- Making Mischief: A Maurice Sendak Appreciation (2006)
Gregory Maguire has also written other books unrelated to Oz, such as:
- Confetti Girl (2002)
- The Lazarus Project (2007)
- What-the-Dickens: The Story of a Rogue Tooth (2022)