Wilhelm Marx (January 15, 1863 – August 5, 1946) was a German lawyer, Catholic politician and a member of the Centre Party. He was Chancellor of the German Reich twice, from 1923 to 1925 and again from 1926 to 1928, and also served briefly as minister president of Prussia in 1925, during the Weimar Republic. He was the only Chancellor to serve two terms during the Weimar Republic.