Ernest II may refer to: Ernest II, Duke of Swabia (died in 1030) Ernest II, Duke of Saxe-Gotha-Altenburg (1745–1804) Ernest II, Duke of Saxe-Coburg and Gotha (1818–1893) Ernest II, Count of Lippe-Biesterfeld (1842–1904) Ernst II, Prince of Hohenlohe-Langenburg (1863–1950) Ernst II, Duke of Saxe-Altenburg (1871–1955)