Constantin Fehrenbach, sometimes erroneously Konstantin Fehrenbach,, was a German politician who was one of the major leaders of the Catholic Centre Party. He served as president of the Reichstag in 1918 and then as president of the Weimar National Assembly from 1919 to 1920. In June 1920, Fehrenbach became Chancellor of Germany. During his time in office, the central issue he had to face was German compliance with the terms of the Treaty of Versailles. He resigned in May 1921 when his cabinet was unable to reach a consensus on war reparations payments to the Allies. Fehrenbach remained in the Reichstag and headed the Centre Party's contingent there from 1923 until his death in 1926.