Hans-Joachim Buddecke (22 August 1890 – 10 March 1918) was a German flying ace in World War I, credited with thirteen victories. He was the third ace, after Max Immelmann and Oswald Boelcke, to earn the Blue Max (Pour le Mérite). He saw combat in three theaters during the First World War: Bulgaria, Turkey, and the Western Front. His exploits at Gallipoli arena won him the nickname El-Schahin, "hunter falcon".