The Magus (1966) is the first novel written (but second published) by British author John Fowles. It tells the story of Nicholas Urfe, a teacher on a small Greek island. Urfe finds himself embroiled in psychological illusions of a master trickster that become increasingly dark and serious.

The novel was a bestseller, partly because it tapped successfully into—and then arguably helped to promote—the 1960s popular interest in psychoanalysis and mystical philosophy.