SM UB-59 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the Flanders Flotilla of the German Imperial Navy on 25 August 1917 as SM UB-59. She operated as part of the Flanders Flotilla based in Zeebrugge. UB-59 scuttled 5 October 1918 off Zeebrugge at 51°19′N 03°12′E / 51.317°N 3.200°E during the evacuation of Belgium by German forces.