What is the name of J.K. Rowling’s children’s book about a boy named Jack?

J.K. Rowling’s children’s book about a boy named Jack is The Christmas Pig.

The Christmas Pig was published in 2021. It follows Jack, a young boy whose favorite toy, a Christmas pig, is lost on Christmas Eve. A replacement toy accompanies Jack on a fantastical journey through the Land of the Lost.

The story is an original children’s novel rather than a Harry Potter companion book. Its central themes include love, loss, friendship, and the emotional importance children can attach to treasured objects.

Readers sometimes confuse it with The Ickabog, another standalone Rowling children’s fantasy, or with Fantastic Beasts, which began as a fictional textbook in the Harry Potter world. The Christmas Pig is separate from both and centers on Jack and his toy.