SM UC-14 was a German Type UC I minelayer submarine or U-boat in the German Imperial Navy () during World War I. The U-boat was ordered on 23 November 1914, laid down on 28 January 1915, and was launched on 13 May 1915. She was commissioned into the German Imperial Navy on 5 June 1915 as SM UC-14. Mines laid by UC-14 in her 38 patrols were credited with sinking 16 ships, one of which was the Italian pre-dreadnought battleship , which at displacement was one of the largest ships sunk by U-boats during the war. UC-14 was mined and sunk on 3 October 1917.
The submarine's wreck was finally located in September 2023
A Type UC I submarine, UC-14 had a displacement of when at the surface and while submerged. She had a length overall of , a beam of , and a draught of . The submarine was powered by one Benz six-cylinder, four-stroke diesel engine producing , an electric motor producing , and one propeller shaft. She was capable of operating at depths of up to .
The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, she could operate for at ; when surfaced, she could travel at . UC-14 was fitted with six mine tubes, twelve UC 120 mines, and one machine gun. She was built by AG Weser Bremen and her complement was fourteen crew members.