Charles I may refer to:

Kings and emperors Charlemagne (742–814), numbered Charles I in both list of Holy Roman Emperors and the list of French kings Charles I of Anjou (1226–1285), also king of Albania, Jerusalem, Naples and Sicily Charles I of Hungary (1288–1342), also king of Croatia Charles I of Navarre (1294–1328), also Charles IV of France Charles I of Bohemia (1316–1378), also Charles IV, Holy Roman Emperor Charles I of Norway (1408–1470), also Charles VIII of Sweden Charles V, Holy Roman Emperor (1500–1558), also Charles I of Spain Charles I of England (1600–1649) Charles I of Württemberg (1823–1891) Charles I of Romania or Carol I (1839–1914) Charles I of Portugal or Carlos I (1863–1908) Charles I of Austria or Karl I (1887–1922), also Charles IV of Hungary and Charles III of Bohemia

Others Charles I, Duke of Lorraine (953–993) Charles I, Count of Flanders (1083–1127/86–1127), called Charles the Good Charles, Count 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, Count of Armagnac (1425–1497) Charles I, Count of Ligny (1448–1530) Charles I, Duke of Savoy (1468–1490), titular king of Cyprus, Jerusalem, and Armenia Charles I, Duke of Münsterberg-Oels (1476–1536) Charles I, Duke of Mecklenburg (1540–1610) Charles I, Duke of Elbeuf (1556–1605) Charles I, Count Palatine of Zweibrücken-Birkenfeld (1560–1600) Charles I, Duke of Mantua and Montferrat or Charles Gonzaga (1580–1637) Charles I Louis, Elector Palatine (1617–1680) Charles I, Landgrave of Hesse-Kassel (1654–1730) Charles I, Landgrave of Hesse-Philippsthal (1682–1770) Charles I, Duke of Brunswick-Wolfenbüttel (1713–1780) Charles I, Duke of Parma (1716–1788), also Charles III of Spain and Sicily and Charles VII of Naples Charles I, Duke of Lucca (1799–1883), also Charles II, Duke of Parma and Louis II of Etruria Charles Emmanuel I, Duke of Savoy (1562–1630)

Artworks and literature Charles I in Three Positions, an oil painting of Charles I of England by Sir Anthony van Dyck (1635 or 1636) King Charles I (play), a 1737 play by William Havard Charles the First (Mitford play), an 1834 tragedy by Mary Russell Mitford Charles the First (Shelley play), an unfinished 1822 historical verse drama by Percy Bysshe Shelley Charles the First (Basquiat), by American artist Jean-Michel Basquiat

See also Carl I (disambiguation)