Which Hogwarts house does J.K. Rowling identify as her favourite?

J.K. Rowling has identified Hufflepuff as her favourite Hogwarts house.

Hufflepuff is one of the four houses at Hogwarts School of Witchcraft and Wizardry. It was founded by Helga Hufflepuff, and its house traits are commonly associated with loyalty, fairness, patience, and hard work. Its students are represented by a badger.

The Harry Potter story centres on Harry’s membership in Gryffindor, so readers sometimes assume that Gryffindor must also be Rowling’s personal favourite. Rowling has instead repeatedly expressed affection for Hufflepuff and its values.

Hufflepuff’s most prominent student in the main series is Cedric Diggory, who represents the house in the Triwizard Tournament. The house’s founder and emblem are fictional elements of Rowling’s wizarding world.