Royal Prussian Jagdstaffel 12 was a World War I "hunting group" (i.e., fighter squadron) of the Luftstreitkräfte, the air arm of the Imperial German Army during World War I. As one of the original German fighter squadrons, the unit would score 155 aerial victories (including three wins over observation balloons) during the war, at the expense of seventeen killed in action, eight wounded in action, and one taken prisoner of war.