William Henry Harman (February 17, 1828 – March 2, 1865) was a brigadier general in the Virginia militia and colonel in the Confederate States Army during the American Civil War (Civil War). Prior to the war, Harman had served as a second lieutenant in the 1st Virginia Infantry Regiment during the Mexican-American War, after which he had become a lawyer. He was commonwealth's attorney for Augusta County, Virginia from 1851 until the beginning of the Civil War, when he was appointed a brigadier general in the state militia.