SM UB-14 was a German Type UB I submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The submarine was also known by the Austro-Hungarian Navy designation of SM U-26. Although UB-14 sank the British submarine E20 in the Sea of Marmara in November 1915, she spent most of the rest of her career patrolling in the Black Sea. The U-boat had only limited success there, sinking only three ships through the end of the war. After the war ended, the submarine was disarmed at Sevastopol and surrendered at Malta in November 1918. UB-14 was broken up in 1920.