Jacob Ziegler (c. 1470 - 1549) was a Bavarian humanist and geographer. He received his education at the University of Ingolstadt and was friends with the scholar Willibald Pirckheimer (1470-1530). Despite having been a courtier to Pope Leo X, he would later embrace Protestantism. He taught at Vienna; claims that he had been a professor of mathematics at Uppsala University, while plausible, have not gone unchallenged. He is best known for his geographical treatise Quae intus continentur Syria, Palestina, Arabia, Aegyptus, Schondia, Holmiae... , which was published in Strasbourg in 1532 and contained new and particularly influential maps of Scandinavia and the Holy Land. His work would be adopted by Sebastian Münster and even Gerard Mercator, despite the latter's acknowledgment of Ziegler's errors.
