Jean Jules Henri Mordacq (12 January 1868 – 14 April 1943) was a French general. During his early years as a captain he was the saber champion of the French Army's officer corps. In World War I, he was a frontline commander of initially the , then the 90th Brigade, and finally the , in the process being wounded twice on the battlefield. In 1918 and the Paris Peace Conference, he was a close aide to Clemenceau.