John Frederick

John Frederick may refer to:

• John Frederick of Holstein-Gottorp, Prince-Bishop (1579–1634), Lutheran administrator of the prince-bishoprics of Bremen, Lübeck and Verden
• John Frederick I, Elector of Saxony (1503–1554), known as "The Magnanimous"
• John Frederick II, Duke of Saxony-Coburg-Eisenach, "the middle one" (1529–1595)
• John Frederick, Duke of Württemberg (1582–1628)
• Sir John Frederick (Lord Mayor) (1601–1685), English MP for Dartmouth, 1660–1661, and City of London, 1663–1679, and Lord Mayor of London
• Sir John Frederick, 4th Baronet (1708–1783), British Member of Parliament for New Shoreham, 1740–1741, and West Looe, 1743–1761
• Sir John Frederick, 5th Baronet, British Member of Parliament for Newport, 1774–1780, Christchurch, 1781–1790, and Surrey, 1794–1807
• A pen name of Frederick Schiller Faust (best known under another pen name, Max Brand)
• John Frederick, Margrave of Brandenburg-Ansbach (1654–1686)
• John Frederick (cricketer, born 1846) (1846–1907), English cricketer
• John T. Frederick (1893–1975), literary editor, scholar, critic, and novelist
• John Frederick, Duke of Saxe-Weimar (1600–1628), Duke of Saxe-Weimar
• John Frederick, Count Palatine of Sulzbach-Hilpoltstein (1587–1644)
• John Frederick, Duke of Brunswick-Lüneburg (1625–1679)
• John Frederick, Duke of Pomerania (1542–1600)
• John Frederick, Prince of Schwarzburg-Rudolstadt (1721–1767)