Franz Blei (pseudonyms: Medardus, Dr. Peregrinus Steinhövel, Amadée de la Houlette, Franciscus Amadeus, Gussie Mc-Bill, Prokop Templin, Heliogabal, Nikodemus Schuster, L. O. G., Hans Adolar; January 18, 1871, Vienna – July 10, 1942, Westbury, Long Island, New York) was an essayist, playwright and translator. He was also noted as a bibliophile, a critic, an editor in chief and publisher. He was a friend and collaborator of Franz Kafka.