William Henry French (January 13, 1815 – May 20, 1881) was a career United States Army officer and a Union Army General in the American Civil War. He rose to temporarily command a corps within the Army of the Potomac, but was relieved of active field duty following poor performance by his command during the Mine Run Campaign in late 1863. He remained in the Army and went on to command several Army installations before his retirement in 1880.