St. Irvyne; or, The Rosicrucian: A Romance is a Gothic horror novel written by Percy Bysshe Shelley in 1810 and published by John Joseph Stockdale in December of that year, dated 1811, in London anonymously as "by a Gentleman of the University of Oxford" while the author was an undergraduate. The main character is Wolfstein, a solitary wanderer, who encounters Ginotti, an alchemist of the Rosicrucian or Rose Cross Order who seeks to impart the secret of immortality. The book was reprinted in 1822 by Stockdale and in 1840 in The Romancist and the Novelist's Library: The Best Works of the Best Authors, Vol. III, edited by William Hazlitt. The novella was a follow-up to Shelley's first prose work, Zastrozzi, published earlier in 1810. St. Irvyne was republished in 1986 by Oxford University Press as part of the World's Classics series along with Zastrozzi and in 2002 by Broadview Press.