SM UC-16 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 29 August 1915 and was launched on 1 February 1916. She was commissioned into the German Imperial Navy on 18 June 1916 as SM UC-16.[Note 1] In 13 patrols UC-16 was credited with sinking 42 ships, either by torpedo or by mines laid. UC-16 disappeared in October 1917.