Petr Chelčický was a Czech Christian spiritual leader and author in the 15th century Bohemia, now the Czech Republic. He was one of the most influential thinkers of the Bohemian Reformation. Petr Chelčický inspired the Unitas Fratrum, who opposed transubstantiation and monasticism, insisting on pacifism and the primacy of scripture. There are multiple parallels with the teachings of the Anabaptists and Petr Chelčický. Czech Baptists have also expressed continuity with the Bohemian reformation by identifying with Petr Chelčický.

The Czech Republic, also known as Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The Czech Republic has a hilly landscape that covers an area of 78,871 square kilometers (30,452 sq mi) with a mostly temperate continental and oceanic climate. The capital and largest city is Prague; other major cities and urban areas include Brno, Ostrava, Plzeň and Liberec.