Julius Schiller (c. 1580 - 1627) was a lawyer and astronomer from Augsburg. He was a friend and associate of Johann Bayer (1572 - 1625), and may have contributed to Bayer's celebrated 1603 star atlas, the Uranometria Omnium Asterismorum. In any event, Bayer's work was highly influential on Schiller's own 1627 star atlas Coelum Stellatum Christianum, which updated Bayer's Uranometria, changing the position of some stars and adding others. However, Schiller's work was quite different from Bayer's in that he replaced the Greco-Roman mythological figures and zodiac animals with figures from Christianity, including Jesus, the Apostles, angels, and saints.