Gustav Brugge is a Danish-born astrologer and teacher specialising in esoteric astrology. The practice integrates classical chart analysis with the esoteric framework of the Seven Rays, chakras, spiritual development, and life purpose across multiple incarnations, drawing on the tradition of Alice A. Bailey. Based for a period in Phoenix, Arizona, where the book An Esoteric Handbook on Astrology was written (2001-2002). Work encompasses individual readings, workshops, lectures, teaching, and writing in the field of esoteric astrology.