Diana Wynne Jones was a British novelist, poet, academic, literary critic, and short story writer. She principally wrote fantasy and speculative fiction novels for children and young adults. Although usually described as fantasy, some of her work also incorporates science fiction themes and elements of realism. Jones's work often explores themes of time travel and parallel or multiple universes. Some of her better-known works are the Chrestomanci series, the Dalemark series, the three Moving Castle novels, Dark Lord of Derkholm, and The Tough Guide to Fantasyland.

Howl's Moving Castle is a fantasy novel by British author Diana Wynne Jones, first published in 1986 by Greenwillow Books of New York. It was a runner-up for the annual Boston Globe–Horn Book Award, and won the Phoenix Award twenty years later. It was adapted into an animated film of the same name in 2004, which was nominated for the Academy Award for Best Animated Feature.