The Bohemian Reformation was a religious movement in the early 15th century that sought to reform the Catholic Church in the region of Bohemia, now part of the Czech Republic. It was influenced by the teachings of John Wycliffe and later by Jan Hus, who advocated for church reform, including the use of the vernacular in religious services and greater access to the Bible for laypeople. The movement led to significant social and political changes, culminating in the Hussite Wars (1419-1434). The Hussites, followers of Hus, challenged both the Catholic Church and the Holy Roman Empire, promoting ideas of religious freedom and national identity that would resonate in later reformations across Europe.