Admiral Seniavin, was a Admiral Ushakov-class coastal defense ship built for Imperial Russian Navy during the 1890s. She was one of eight Russian pre-dreadnought battleships captured by the Imperial Japanese Navy from the Russians during the Russo-Japanese War of 1904–1905. She subsequently served in the Japanese Navy under the name Mishima (見島) until sunk as a target in 1936.

The Admiral Ushakov class were coastal defense battleships built for the Imperial Russian Navy during the 1890s to counter armored ships of the Swedish Navy. All three ships were stationed in the Baltic Sea when the Russo-Japanese war began and sailed with the Baltic Fleet around the Cape of Good Hope to the Pacific. Two ships were captured by the Japanese and one was scuttled during the Battle of Tsushima.