SM UC-30
 SM UC-30 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 27 July 1916. She was commissioned into the German Imperial Navy on 22 August 1916 as SM UC-30. In 4 patrols UC-30 was credited with sinking 5 ships either by torpedo or by mines laid. UC-30 was mined and sunk off Horns Reef on 21 April 1917.