SMS G9 was a V1-class large torpedo boat of the Imperial German Navy. She was built by the Germaniawerft shipyard at Kiel between 1911 and 1912, completing on 25 September 1912. G9 served with the German High Seas Fleet in the North Sea during the First World War, taking part in the Battle of Heligoland Bight on 28 August 1914, the Battle of Dogger Bank in 1915 and the Battle of Jutland in 1916. She was sunk by a mine on 3 May 1918.