Simon Forman was a notable English astrologer, occultist, and herbalist active during the late Elizabethan and early Jacobean periods. He maintained a large and controversial medical and astrological practice in London, attracting a wide range of clients from all social classes. Forman is best known today for his extensive and detailed casebooks, which provide a unique and intimate glimpse into the private lives of early modern Londoners. His detailed records have become invaluable historical documents, though he was also implicated posthumously in the Overbury affair.