In Search of the Miraculous: Fragments of an Unknown Teaching is a 1949 book by Russian philosopher P. D. Ouspensky which recounts his meeting and subsequent association with George Gurdjieff.

The book begins with Ouspensky returning home to St. Petersburg from his recent excursion to the East, where he journeyed "in search of the miraculous", as he put it.

He immediately joins Gurdjieff's esoteric school, and begins learning a certain system of self-development which originated in the East, allegedly during the most remote antiquity, possibly millennia before recorded history.

The latter part of the book also describes the author's feelings and motives behind his eventual decision to teach the system independently, not under the direct supervision of his teacher, Gurdjieff, which he formally announced to his students in London in early 1924.

The 2001 edition has a foreword by writer Marianne Williamson, in which she notes the book's reputation as being a classic, or even a primer, in the teaching of esoteric principles and ideas.