Karl Zell (8 April 1793 – 24 January 1873) was a German statesman, philologist, and defender of the rights of the Catholic Church.
He attended the high-school of his native town of Mannheim, and studied philology at the Universities of Heidelberg, Göttingen, and Breslau (1810-1814).
The fame he won for this crusade reached far beyond the boundaries of Baden and led to his election as president of the congresses for Catholic Germany held at Munster in 1852 and at Vienna in 1853.
As a speaker at assemblies, in pamphlets and articles for periodicals and newspapers, like the "Freiburger Kirchenblatt" and the "Historisch-Politische Blatter", he constantly defended the rights of the Church, Christian schools, religious orders, and argued against criticisms of the Church.
As an author he wrote on a great variety of subjects, devoting himself especially to Aristotle, Calderón, Shakespeare, and the history of Baden.