Erin Sullivan (1947-2023) was a Canadian-born consultant astrologer, author, and teacher widely regarded as one of the great practitioners of contemporary astrology. She was known as 'the astrologer's astrologer.' Practice began in the early 1970s, and she went on to lecture worldwide, leading workshops and symposia on human development using mythology, psychology, and the language of astrology. She was a long-term faculty member and lecturer at Liz Greene's Centre for Psychological Astrology in London and Zurich, and edited the prestigious Arkana Contemporary Astrology Series. She was a co-founder of AFAN (Association for Astrological Networking) in 1984. She lived and worked in Canada, the United Kingdom, and the United States, spending her final years in Taos and Santa Fe, New Mexico. She authored six major astrology books covering transits, retrogrades, family dynamics, midlife, relocation, and planetary symbolism. She passed away on December 11, 2023, aged 76, at her home in Santa Fe, New Mexico.