The Sword of Knowledge is a trilogy of shared world fantasy novels credited to the authors C. J. Cherryh, Leslie Fish, Nancy Asire, and Mercedes Lackey.

She did write a foreword for each book and may have helped plan the storylines, and therefore was credited as a co-author for all three novels.

Specifically, although wizards exist in the books, they do not cast magic spells in the manner typical of works of high fantasy or tales of sword and sorcery.

Additionally, the books take place in a culture beginning to develop cannon and other technology appropriate for a Late Middle Ages–style setting.

Because of the limits of magical powers in these books and the technical developments portrayed in them, the novels could be considered examples of the low fantasy subgenre.