Imperator Alexandr III () was a Borodino-class battleship built for the Russian Imperial Navy in the first decade of the 20th century. The design of the Borodino class was derived from that of the French-designed battleship Tsesarevich. The ship was completed a few months before the start of the Russo-Japanese War in February 1904 and was assigned to the Second Pacific Squadron sent to the Far East six months later to break the Japanese blockade of Port Arthur. The Japanese captured the port while the squadron was in transit and their destination was changed to Vladivostok. During the Battle of Tsushima in May 1905, Imperator Alexandr III was sunk by Japanese gunfire with the loss of her entire crew.