Katharina Zell was a Protestant reformer and writer from Strasbourg who lived during the 16th century. Born around 1497, she became a prominent figure in the Reformation through her religious writings and pamphlets. She was notable for being one of the earliest Protestant women to enter into a marriage with a clergyman, forming a collaborative partnership with her husband, the pastor Matthew Zell. Throughout her life, she maintained an independent intellectual path, engaging in theological discourse and advocating for the spiritual needs of the laity.