Demon Box is a 1986 collection of works by Ken Kesey.

The book includes nonfiction and fiction short stories as well as some of Kesey's essays.

[1] Kesey explained why the collection of semi-autobiographical essays was titled Demon Box: "When Viking was bringing it out," he said, "they were desperate for something to call it.

"[2] To his publisher, Kesey started calling the book a "box novel," a new form of literature.

"If I were to think of it as a (traditional) novel, I would have joined it together and had a gradual progression of thematic movement and character change through it, but I didn't want to do that.