Charles VI may refer to:
- Charles VI of France, "the Well-Beloved" and "The Mad King" (1368–1422)
- Charles VI, Holy Roman Emperor and VI of Naples (1685–1740)
- Infante Carlos, Count of Montemolin (1818–1861), pretender to the throne of Spain, styled "Charles VI" by Carlists
- Charles VI (opera), an opera by Fromental Halévy