The Merchants of Souls is a 2001 science fiction novel by John Barnes and the third book in the Thousand Cultures series.

He has sworn off of working for the Office of Special Projects but is drawn back after discovering that a group has begun recording the personalities of the deceased and is using them for their own entertainment.

This is considered an affront to Leones and many of the peoples of the Thousand Cultures, threatening to break the fragile balance in place.

Critical reception for The Merchants of Souls was mixed,[1][2] with the Orlando Sentinel giving it a positive review while Publishers Weekly panned the novel.

[3][4] Kirkus Reviews also gave a mixed review, stating that it was a "Soporifically plotted story of ideas that, despite some sly social satire, gets lost in interminable talk about human identity, truth, and memory.