The House of the Four Winds is a novel of adventure by John Buchan, first published in 1935. It is a Ruritanian romance, and the last of his three Dickson McCunn books. The novel is set in the fictional Central European country of Evallonia in the early 1930s. It concerns the involvement of some Scottish visitors in the overthrow of a corrupt republic and the restoration of the monarchy. It is a sequel to Castle Gay, in which some Evallonians visited Scotland on a secret mission two years before the start of this novel.