Moritz Joseph Josias Lieber (l 1 October 1790, the castle of Blankenheim in the Eifel – 29 December 1860, Bad Camberg, Hesse-Nassau) was a German Catholic politician and publisher. He was a translator of many conservative and Catholic authors into German, including Joseph de Maistre and Thomas Moore. He was the first president of the "Katholische Verein Deutschlands", which would become the forerunner of the Catholic association, particularly the Centre Party.