Rodney Collin (April 26, 1909 – May 3, 1956) was a British writer and researcher of mysticism, known for his work on the Fourth Way system of G. I. Gurdjieff. Born in England, he studied natural sciences at Cambridge University before becoming a devoted follower of Gurdjieff in the 1930s. Collin authored several books blending science, philosophy, and spirituality, including 'The Theory of Celestial Influence' and 'The Mirror of the Soul.' He lectured in the United States and traveled to South America, where he died suddenly in Peru at age 47. Due to limited information, further details of his life remain unclear.