Who wrote the book Labyrinth?

There's no single book called "Labyrinth." You're likely thinking of one of these:

* The film "Labyrinth" (1986): The screenplay was written by Terry Jones and Labyrinth's story was credited to Jim Henson and Terry Jones.

* The novel "Labyrinth" by Kate Mosse (2005): This novel is set in the French Languedoc region and focuses on a young woman searching for her missing sister and a powerful, ancient relic.

If you're thinking of a different "Labyrinth," please provide more information so I can help you!