Julius Johannes Ludovicus Ritter von Payer (2 September 1841 - 19 August 1915) was an Austro-Hungarian arctic explorer and an Arctic landscape artist.
Born Julius Payer, his father Franz Anton Rudolf Payer was a retired officer who died when Julius was only fourteen. Payer attended k.k. cadet school in Lobzowa near Krakew (now Poland). Between 1857 and 1859 he studied at the Theresian Military Academy in Wiener Neustadt (near Vienna). In 1859 he served as a sub-lieutenant with the 36th. infantry regiment in Verona, Northern Italy. He participated in the 1859 Battle of Solferino. Between 1860 and 1863 he served at the garrison in Verona, Italy. In 1863 Payer was assigned as a history teacher to the cadet school in Eisenstadt, Austria. After promotion to the rank of lieutenant first class he was posted to the garrison of Venetia.
In 1862 he started exploratory tours of the Italian Alps and Hohe Tauern in his free time. From 1864-1868 he explored the Adamello-Presanella Group and the Ortler Alps. He was the first to climb Adamello (3554m). His tours resulted in creating a detailed topographical map at a scale 1:56,000. Due to his achievements, Payer was transferred to the Austrian Military Cartographical Institute in Vienna.