Charles II may refer to:

• Charles the Bald (823–877), king of the West Franks and Holy Roman Emperor.
• Charles II of Naples (1248–1309).
• Charles II of Navarre (1332–1387).
• Charles II, Duke of Lorraine (1390–1431).
• Charles II, Duke of Bourbon (1434–1488).
• Charles II of Savoy (1489–1496).
• Charles Emmanuel II of Savoy (1634–1675).
• Charles II of England (1630–1685).
• Charles II of Spain (1661–1700).
• Charles II of Romania (1893–1953).

Carles II | Karel II. (rozcestník) | Carlos II | Karolo la 2-a | Carlo II | Karel II | シャルル2世 | Karl II | Karol II | Karl II | 查理二世