The Sword of Truth is a series of 21 sword and sorcery novels and six novellas written by Terry Goodkind. The books follow the protagonists Richard Cypher, Kahlan Amnell, Nicci, Cara, and Zeddicus Zu'l Zorander on their quest to defeat oppressors who seek to control the world and those who wish to unleash evil upon the world of the living. While each novel was written to stand alone, except for the final three that were intended to be a trilogy, they follow a common timeline and are linked by ongoing events that occur throughout the series.

Terry Lee Goodkind was an American writer. He was known for the epic fantasy series The Sword of Truth as well as the contemporary suspense novel The Law of Nines (2009), which has ties to his fantasy series. The Sword of Truth series sold 25 million copies worldwide and was translated into more than 20 languages. Additionally, it was adapted into a television series called Legend of the Seeker, which premiered on November 1, 2008, and ran for two seasons, ending in May 2010.