Quest for the Well of Souls is the third book in the Well of Souls series by the American author Jack L. Chalker, and completes the Wars of the Well World duology begun with Exiles at the Well of Souls. A foreword by Chalker indicates that Quest and Exiles were originally conceived as a single book, but due to the decision to split them, Quest was written to be readable as a standalone novel.

Well World is a series of science fiction novels by Jack L. Chalker. It involves a planet-sized supercomputer known as the Well of Souls that builds reality on top of an underlying one of greater complexity but smaller size. The computer was built by a now-extinct race, the Markovians, who developed the Well of Souls with the goal of creating a new species that would transcend their own.