Julius Johann Heinrich Jordan (27 October 1877 – 7 February 1945) was a German archaeologist active in Mesopotamia before and after the First World War.
Born in Cassel in 1877, Jordan was educated at the Wilhelm-Gymnasium there, then in the spring of 1896 was admitted to the structural engineering department of the TU Dresden to study architecture.
In 1910 Jordan received a doctorate, supervised by Cornelius Gurlitt in Dresden, with a dissertation entitled "Construction Elements of Assyrian Monumental Buildings" (Konstruktionselemente assyrischer Monumentalbauten).
[2][3] Between 14 November 1912 and 12 May 1913, a German Oriental Society team led by Jordan, assisted by Conrad Preusser, began the first systematic excavations at Uruk.
During the Second World War he was a consultant at the German Archaeological Institute and a visiting professor of architectural history at Technische Universität Berlin.