What is the name of J.K. Rowling’s wizarding-world encyclopedia-style companion book about magical creatures?

Fantastic Beasts and Where to Find Them is J.K. Rowling’s companion book about magical creatures.

The book was first published in 2001 as a charity companion to the Harry Potter novels. It is presented as a textbook used by Hogwarts students and attributed within the fiction to Newt Scamander, a magizoologist. The proceeds from the original edition supported Comic Relief.

The book is distinct from the later film series with the same main title. Rowling wrote the screenplay for Fantastic Beasts and Where to Find Them, released in 2016, which expands Newt Scamander into a central character and moves the action to 1920s New York.

The other original companion titles have different purposes. Quidditch Through the Ages covers wizarding sport, while The Tales of Beedle the Bard presents fictional fairy tales. Together, these publications broaden the world beyond the seven main novels.