Frederick II

Frederick II may refer to:

• Frederick II, Duke of Swabia (1090–1147)
• Frederick II, Holy Roman Emperor (1194–1250), King of Sicily from 1198; Emperor from 1220
• Frederick II of Austria (died 1246), Duke of Austria 1230–1246
• Frederick III of Sicily (1272–1337), the second Frederick to rule the Kingdom, great grandson to the first such-named King of Sicily, Frederick II, Holy Roman Emperor
• Frederik II van Sierck (died 1322), bishop of Utrecht
• Frederick II, Elector of Saxony (1412–1464)
• Frederick II, Margrave of Brandenburg (1413–1470), margrave 1440–1470
• Frederick II, Elector Palatine (1482–1556), elector 1544–1556
• Frederick II of Denmark and Norway (1534–1588), king 1559–1588
• Frederick II, Duke of Saxe-Gotha-Altenburg (1676–1732)
• Frederick II, Landgrave of Hesse-Cassel (1720–1785)
• Frederick II of Prussia (1712–1786), king 1740–1786, better known as Frederick the Great
• Frederick II, Duke of Mecklenburg-Schwerin (1717-1785)
• Frederick II, Duke of Anhalt (1856-1918)