SMS Tegetthoff was an Austro-Hungarian dreadnought battleship of the Tegetthoff class named after Wilhelm von Tegetthoff, a 19th-century Austrian admiral most notable for defeating the Italian Navy in the Battle of Lissa. Tegetthoff was built at the Stabilimento Tecnico Triestino yard in Trieste as part of the first and only class of dreadnought battleships in the Austro-Hungarian Navy. After her construction in 1912, an earlier armoured battleship named SMS Tegetthoff was renamed SMS Mars.