Vettius Valens of Antioch was a Greek astrologer of the 2nd century CE. A native of Antioch, his life is reconstructed primarily from his own writings, which describe extensive travel, including to Egypt, and a career marked by professional and personal hardships. He was a contemporary of Claudius Ptolemy, whose theoretical work Tetrabiblos contrasts with Valens’s more practical methods.

His sole surviving work is the Anthologies, a nine-book astrological treatise also known as the Apotelesmatics. Valens is a pivotal figure in the history of astrology. His Anthologies is the most extensive personal astrological workbook from antiquity, offering an unparalleled view of Hellenistic practice through over 120 illustrative horoscopes. This empirical compilation preserves unique techniques and was influential in later Byzantine and Islamic traditions.