Jean François Jacqueminot, viscount of Ham (23 May 1787 – 3 March 1865) was a French general and political leader. He was born at Nancy, studied at the École Militaire, entered the army in 1803, and distinguished himself at the battles of Austerlitz, Essling, Wagram, and the Beresina. In 1814, he was promoted colonel. When Napoleon returned from Elba, Jacqueminot was made commander of lancers. He made a brilliant charge at Quatre Bras and after Waterloo refused transfer to the service of the Bourbons and was imprisoned for a month. After his release, Jacqueminot established at Bar-le-Duc a great silk factory, which gave employment to many of the veterans of the French Imperial Army. Elected to the House of Deputies in 1827, he joined in the protest of the against Polignac, and with Pajol