Charles VI is an 1843 French grand opera in five acts with music composed by Fromental Halevy and a libretto by Casimir Delavigne and his brother Germain Delavigne.

The number "Guerre aux tyrans!" ("War on the tyrants!") achieved separate fame as a song of political protest.

The opera was first presented on 15 March 1843 by the Paris Opera at the Salle Le Peletier. It continued to be performed there, and in a revised form beginning on 4 October 1847, up to 1848, and was revived again in 1850, receiving a total of 61 performances. Beginning on 5 April 1870 it was produced at the Théâtre Lyrique with Rosine Bloch in the role of Odette and was given there a total of 22 times.

Charles VI was also performed in French in Brussels (beginning on 2 October 1845), The Hague (25 April 1846), New Orleans (22 April 1847), Buenos Aires (4 May 1854), Batavia (27 April 1866), Barcelona (29 April 1871), Mexico (19 January 1882), and Marseille (8 April 1901). It was performed in German in Hamburg (13 February 1851) and in Italian in Milan (16 March 1876).

Performances in the 20th century were rare, but the opera was revived at Compiègne in 2005.