The Hussites (Czech: Husité or Kališníci; "Chalice People") were a Christian movement in the Kingdom of Bohemia following the teachings of Czech reformer Jan Hus (c. 1369–1415), who became the best-known representative of the Bohemian Reformation and one of the forerunners of the Protestant Reformation. This predominantly religious movement was propelled by social issues and strengthened Czech national awareness.
After the Council of Constance lured Jan Hus in with a letter of indemnity, then tried him for heresy and put him to death at the stake on 6 July 1415, the Hussites fought the Hussite Wars (1420–1434) for their religious and political cause.
Among present-day Christians, Hussite traditions are represented in the Moravian Church, Unity of the Brethren, and the refounded Czechoslovak Hussite churches.
The arrest of Hus in 1414 caused considerable resentment in Czech lands. The authorities of both countries appealed urgently and repeatedly to King Sigismund to release Jan Hus.
When news of his death at the Council of Constance in 1415 arrived, disturbances broke out, directed primarily against the clergy and especially against the monks. Even the Archbishop narrowly escaped from the effects of this popular anger. The treatment of Hus was felt to be a disgrace inflicted upon the whole country and his death was seen as a criminal act. King Wenceslaus, prompted by his grudge against Sigismund, at first gave free vent to his indignation at the course of events in Constance. His wife openly favoured the friends of Hus. Avowed Hussites stood at the head of the government.