The AEG Dr.I was a prototype triplane fighter built by the (AEG) during the First World War for the Imperial German Army's () Imperial German Air Service () in 1917. It was derived from the D.I biplane. Only a single prototype was built and it was not chosen for production.
German fighter pilots had been extremely impressed by the British Sopwith Triplane in early 1917 and the Inspectorate of Flying Troops ( () responded by ordering triplanes from almost all of the German aircraft manufacturers in July after one had been captured intact. AEG modified the design of a D.I biplane with new wings and completed one prototype in October. Other than the triple wing it was a D.I, the aircraft had the same fuselage, engine and twin gun armament of its earlier brethren.