Charles I may refer to:In Kings and Emperors:* Charles I, Holy Roman Emperor or Charlemagne (742–814)* Charles I of Naples (1226–1285)* Charles I of Hungary (1288–1342)* Charles I of Navarre (1294–1328)* Charles I of Bohemia (1316–1378)* Charles I of Norway (1409–1470)* Charles I of Spain (1500–1558)* Charles I of England, Scotland, and Ireland (1600–1649)* Charles I of Romania (1839–1914)* Charles I of Portugal (1863–1908)* Charles I of Austria (1887–1922)In others:* Charles, Duke of Lower Lorraine (953–993)* Charles I, Count of Flanders (1080/86–1127), called Charles the Good* Charles of Valois or Charles I, count of Alençon 1291–1325* Charles I, Lord of Monaco (died 1357)* Charles I, Duke of Bourbon (1401–1456)* Charles I, Count of Nevers (1414–1464)* Charles I, Margrave of Baden-Baden (died 1475)* Charles I, Duke of Savoy (1482–1490)* Charles I, Count Palatine of Zweibrücken-Birkenfeld (1560–1600)* Charles I, Duke of Elbeuf (1556–1605)* Charles I, Duke of Mantua and Montferrat (1580–1637)* Charles I Louis, Elector Palatine (1617–1680)* Charles I, Landgrave of Hesse-Kassel (1654–1730)* Charles I, Duke of Brunswick-Wolfenbüttel (1713–1780)* Charles I, Duke of Parma or Charles III of Spain