SM UB-37 was a German Type UB II submarine or U-boat in the German Imperial Navy () during World War I. The U-boat was ordered on 22 July 1915 and launched on 28 December 1915. She was commissioned into the German Imperial Navy on 17 June 1916 as SM UB-37. The submarine sank 31 ships in 10 patrols. UB-37 was sunk by British Q ship HMS Penshurst in the English Channel on 14 January 1917. The wreck of UB-37 was identified by marine archaeologist Innes McCartney in 1999.