Karl Joseph Wirth, known as Joseph Wirth, (6 September 1879 Freiburg im Breisgau – 3 January 1956 Freiburg im Breisgau) was a German politician of the Catholic Centre Party who served as Chancellor of Germany from 1921 to 1922, for 585 days. During the post-war era, he participated in the neutralist Alliance of Germans party.