The Queen's Fool by Philippa Gregory is a 2003 historical fiction novel. Set between 1548 and 1558, it is part of Philippa Gregory's Tudor series. The series includes The Boleyn Inheritance. The novel chronicles the changing fortunes of Mary I of England and her half-sister Elizabeth through the eyes of the fictional Hannah Green, a Marrano girl escaping to England from Spain where her mother was burned at the stake for being Jewish. Hannah is discovered by Robert Dudley and John Dee and subsequently begged as a fool to Edward VI. She witnesses and becomes caught up the intrigues of the young king's court, and later those of his sisters. As Mary, Elizabeth, and Robert Dudley use Hannah to gather information on their rivals and further their own aims, the novel can plausibly present each side in the complex story. The Queen's Fool follows Hannah from ages fourteen to nineteen, and her coming-of-age is interspersed among the historical narrative. The book reached # 29 on the New York Times Best Seller list and had sold 165,000 copies within three weeks of its release.

Philippa Gregory is an English historical novelist who has been publishing since 1987. The best known of her works is The Other Boleyn Girl (2001), which in 2002 won the Romantic Novel of the Year Award from the Romantic Novelists' Association and has been adapted into two films.