Jan Matthys (also known as Jan Matthias, Johann Mathyszoon, Jan Mattijs, Jan Matthijszoon; c. 1500, Haarlem – 5 April 1534, Münster) was a charismatic Anabaptist leader, regarded by his followers as a prophet. Matthys was a baker in Haarlem, and was converted to Anabaptism through the ministry of Melchior Hoffman in the 1520s. Matthys baptized thousands of converts, and after Hoffman's imprisonment, rose to prominent leadership among the Anabaptists. Matthys rejected the pacifism and non-violence theology of Hoffman, adopting a view that oppression must be met with resistance.