Frederick Louis may refer to: Frederick Louis, Count of Nassau-Ottweiler Frederick Louis, Count Palatine of Zweibrücken Frederick Louis, Hereditary Grand Duke of Mecklenburg-Schwerin Frederick Louis, Prince of Hohenlohe-Ingelfingen Frederick Charles Louis, Duke of Schleswig-Holstein-Sonderburg-Beck Frederick Louis, Duke of Schleswig-Holstein-Sonderburg-Beck Frederick Louis of Württemberg (heir apparent) Frederick Louis of Württemberg-Winnental See also Frederick Lewis (disambiguation)