Otto II generally refers to Otto II, Holy Roman Emperor. It may also refer to:

Otto II may also refer to:

Otto II, Duke of Saxony (912–973), also known as Otto the Great and Otto I (as Holy Roman Emperor) Otto II, Duke of Swabia (died 1047), member of the Ezzonid dynasty Otto II, Marquess of Montferrat (died 1084), a member of the Aleramid dynasty Otto II, Count of Habsburg (died 1111), one of the founding members of the Habsburg family Otto II, Count of Scheyern (died 1120), son of Otto I, House of Wittelsbach Otto II, Count of Chiny (1065–c, 1131), son of Arnold I and Adélaïs Otto II, Count of Duras (died 1147), son of Giselbert II and Gertrud Otto II, Margrave of Meissen (1125–1190), member of the House of Wettin Otto II, Count of Guelders (13th century), son of Gerard III and Margaretha of Brabant Otto II, Margrave of Brandenburg (died 1205), called The Generous (German: der Freigiebige) Otto II (bishop of Freising) (died 1220), 24th Bishop of Freising from 1184 Otto II, Count of Burgundy (c. 1180–1234), also known as Otto I, Duke of Merania Otto II of Andechs and Merania (1208–1248), a member of the House of Andechs Otto II, Duke of Bavaria (1206–1253), son of Ludwig I and Ludmilla of Bohemia, and a member of the Wittelsbach dynasty Otto II, Count of Zutphen (12th century), son of Gottschalk, Count of Zutphen and Adelheid of Zutphen Otto II, Prince of Anhalt-Aschersleben (died 1315), German prince of the House of Ascania Otto II, Duke of Brunswick-Lüneburg (1260s–1330), House of Welf and Prince of Lüneburg, 1277–1330 Otto II, Count of Waldeck (died 1369), Count of Waldeck, 1344–1369 Otto II, Count of Rietberg (died 1389), ruling Count of Rietberg, 1365–1389 Otto II, Duke of Pomerania (1380s–1428), Duke of Pomerania-Stettin from the House of Griffins Otto II, Duke of Brunswick-Osterode (1396–1452), son of Duke Frederick I of Brunswick-Osterode and Adelaide of Anhalt-Zerbst Otto II, Duke of Brunswick-Göttingen (1380s–1463), member of the House of Welf, Otto II, Count Palatine of Mosbach-Neumarkt (1435–1499), the Count Palatine of Mosbach-Neumarkt, 1461–1499 Otto II, Duke of Brunswick-Harburg (1528–1603), nicknamed the Younger Otto II of Hungary (1912–2011), the last Crown Prince of Austria-Hungary, 1916–1919

See also Otto fuel II, a monopropellant used to drive torpedoes and other weapon systems Otto I (disambiguation) Otto III (disambiguation) Otto IV (disambiguation) Otto V Otto VI Otto VII Otto VIII