Which J.K. Rowling charity book explains the fictional sport of Quidditch?

Quidditch Through the Ages is the J.K. Rowling charity book that explains the fictional sport of Quidditch.

The book is presented as a Hogwarts library volume by Kennilworthy Whisp. It describes the sport’s history, rules, teams, equipment, and development, including the roles of the Quaffle, Bludgers, and Golden Snitch. Rowling wrote it as a companion work rather than as another Harry Potter adventure.

The book was published in 2001 alongside Fantastic Beasts and Where to Find Them. Proceeds from the original editions supported Comic Relief, a charity known for using comedy and entertainment to raise money for social causes.

The title is sometimes confused with Fantastic Beasts and Where to Find Them, which is framed as a textbook about magical creatures. The Tales of Beedle the Bard is another companion book, but it is a collection of wizarding fairy tales rather than a guide to Quidditch.