Julius Johannes Ludovicus Ritter von Payer, ennobled Ritter von Payer in 1876, was an officer of the Austro-Hungarian Army, mountaineer, arctic explorer, cartographer, painter, and professor at the Theresian Military Academy. He is chiefly known for the Austro-Hungarian North Pole expedition in 1872–74 and the discovery of Franz Josef Land.

The Austro-Hungarian North Pole expedition was an Arctic expedition to find the North-East Passage that ran from 1872 to 1874 under the leadership of Julius Payer and Karl Weyprecht. The expedition discovered and partially explored Franz Josef Land.