Royal Prussian Jagdstaffel 19 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 92 verified aerial victories, including ten wins over enemy observation balloons. In turn, their casualties for the war would amount to eleven pilots killed in action, four wounded in action, and one taken prisoner of war.