A.T. (Tad) Mann (born 1943, Auburn, New York) is an architect, artist, mandala painter, and teacher who transitioned from a Cornell-trained architectural career to full-time astrology. He developed Life*Time Astrology, an original system using a logarithmic time scale to map life events from conception through old age, integrating biology, depth psychology, Eastern mysticism, and the ideas of Gurdjieff, Ouspensky, and Rodney Collin. He also created Astro Location Feng Shui, combining astrology with feng shui principles, and designed and painted The Mandala Astrological Tarot. Mann taught for many years at the Astrological Association of Great Britain (London), the Unicorn School of Astro-psychology and the Scandinavian Astrologi Skole (Copenhagen), and serves on the Advisory Council of Kepler College of Astrological Arts and Sciences. He has been nominated for the Regulus Award, astrology's highest honour, and has authored over sixteen books spanning astrology, reincarnation, sacred architecture, tarot, and sacred landscapes. He has lectured at major international conferences including UAC and CIDA.