Star Wars: The New Jedi Order is a series of 19 science fiction novels, published from 1999 to 2003, set in the Star Wars Expanded Universe. The series revolves around the Yuuzhan Vong invasion of the galaxy 21–25 years after the events depicted in Return of the Jedi. The New Jedi Order was the restored and reformed Jedi organization, following the Great Jedi Purge and subsequent fall of the Galactic Empire. The Jedi Knights, reduced in number to only a handful, were slowly restored, primarily under the leadership of Luke Skywalker. Additional related stories were published, some as e-book novellas and others as comic books ; these increase the total number of published NJO-related stories to 26. The authors that contributed to the series include R.A. Salvatore, Michael Stackpole, James Luceno, Michael Jan Friedman, Troy Denning, Matthew Stover, Kathy Tyers, Greg Keyes, Elaine Cunningham, Aaron Allston, Walter Jon Williams, and Sean Williams & Shane Dix.

Star Wars has been expanded to media other than the original films. This spin-off material is licensed and moderated by Lucasfilm, though during his involvement with the franchise Star Wars creator George Lucas reserved the right to both draw from and contradict it in his own works. Such derivative works have been produced concurrently with, between, and after the original, prequel, and sequel trilogies, as well as the spin-off films and television series. Commonly explored Star Wars media include books, comic books, and video games, though other forms such as audio dramas have also been produced.