The name Charles I is used to refer to numerous persons in history:

• Kings:
  • Charles I of France (also known as Charles I, Holy Roman Emperor) (742-814)
  • Charles I of England, Scotland, and Ireland (1600-1649)
  • Charles I of Spain (also known as Charles V, Holy Roman Emperor) (1500-1558)
  • Charles I of Romania (1839-1914)
  • Charles I of Sicily (1227-1285)
  • Charles I of Portugal (1863-1908)
  • Charles I of Hungary (1288-1342)
• Other:
  • Charles, Duke of Lower Lotharingia (953–993)
  • Charles I, Duke of Bourbon (1401-1456)
  • Charles II, Duke of Lorraine, sometimes called Charle I of Lorraine (1364-1431)
  • Charles I, Emperor of Austria (also known as Charles IV, King of Hungary) (1887-1922)

Karel I. (rozcestník) | Carlos I | Karolo la 1-a | Kaarle I | Carlo I | Karel I | シャルル1世 | Karl I | D. Carlos I (desambiguação) | Karl I | 查理一世