Charles I.
Karl I or Charles I is the name of the following rulers:
- 800–814 Charlemagne , emperor
- 1119–1127 Charles I (Flanders) , Count of Flanders, the Good
- 1266 / 1277–1285 Charles I (Naples) , King of Sicily
- 1290–1325 Charles I (Valois) , Count of Valois
- 1308–1342 Charles I (Hungary) , King of Hungary
- 1330–1363 Charles I (Monaco) , Lord of Monaco
- 1434–1456 Charles I de Bourbon , Duke of Bourbon
- 1453–1475 Charles I (Baden) , Margrave of Baden
- 1482–1490 Charles I (Savoy) , Duke of Savoy
- 1498–1536 Charles I (Münsterberg-Oels) , Duke
- Charles I of Egmond († 1541), Count of Egmond
- 1525–1575 Karl I (Hohenzollern) , Count of Hohenzollern, President of the Imperial Court Council
- 1582–1605 Charles I de Lorraine, duc d'Elbeuf , Duke of Elbeuf
- 1603–1610 Charles I (Mecklenburg) , Duke of Mecklenburg
- 1608–1627 Charles I (Liechtenstein) , Count of Liechtenstein
- 1625–1649 Charles I (England) , King of England
- 1649–1680 Karl I Ludwig (Palatinate) , Elector Palatine of the Rhine
- 1721–1770 Charles I (Hessen-Philippsthal) , Landgrave of Hessen-Philippsthal
- 1735–1780 Charles I (Braunschweig-Wolfenbüttel) , Duke of Braunschweig
- 1864–1891 Charles I (Württemberg) , King of Württemberg
- 1866–1914 Charles I (Romania) , King of Romania
- 1889–1908 Charles I (Portugal) , King of Portugal
- 1916–1918 Charles I (Austria-Hungary) , Emperor of Austria and King of Hungary
- Charles I of Anjou is Charles I (Naples) , King of Naples
- Charles I of Burgundy is Charles the Bold
- Charles I of Bohemia is Charles IV (HRR) , emperor
- Charles I of Navarre is Charles IV (France) , King of France
- Charles I of Norway is Charles VIII (Sweden) , King of Sweden
- Charles I of Parma is Charles III. (Spain) , King of Spain
- Karl I. von Pfalz-Zweibrücken is Karl XI. (Sweden) , King
- Charles I of Spain is Charles V (HRR) , emperor
Church rulers:
- 1218–1230 Charles I (Seckau) († 1230), Bishop of Seckau
