Bob Makransky is an American astrologer, author, and longtime practitioner based in highland Guatemala. He began studying astrology in 1970 and is known for work in natal interpretation, timing techniques, planetary strength, planetary hours, synastry, and traditional astrological methods. His background also includes long-term study of Mayan astrology and shamanism with don Abel Yat Saquib. Horoscope readings have been offered by email, and his published work spans books, journal articles, magazine pieces, and astrology essays.