The Ritual is a 2011 British horror novel by Adam Nevill. The book was first released in the United Kingdom on 7 October 2011 through Pan Macmillan and was released in the United States on 14 February 2012 through Macmillan imprint St. Martin's Griffin. It is Nevill's third published novel and was followed by his 2012 work Last Days. The Ritual is the winner of the 2012 August Derleth Award for Best Horror Novel. Film rights were optioned by Stillking Films, before the option was passed to Imaginarium, who currently holds the film and TV rights. The film adaptation was released in cinemas on 13 October 2017 directed by David Bruckner and starring Rafe Spall and Robert James-Collier.