Which J.K. Rowling novel won the 1999 Nestlé Smarties Book Prize Gold Award in the 9–11 category?

Harry Potter and the Prisoner of Azkaban won the 1999 Nestlé Smarties Book Prize Gold Award in the 9–11 category.

The third Harry Potter novel was published in the United Kingdom in 1999. It introduces Sirius Black, Remus Lupin, the Dementors, and the time-turner, while expanding the story’s history of Harry’s parents and their friends.

The Nestlé Smarties Book Prize was a major British children’s book award decided through a combination of judging and children’s votes. Prisoner of Azkaban won the gold award for the 9–11 age category in 1999, continuing the series’ strong performance in the prize’s early years.

The award should not be confused with the later Carnegie Medal, the Hugo Award, or film awards associated with the franchise. It recognized the novel as a children’s book, not its later film adaptation.