Sergeant William Henry Harrison Crosier (May 5, 1844 to March 14, 1903) was an American soldier who fought in the American Civil War. Crosier received the country's highest award for bravery during combat, the Medal of Honor, for his action during the Battle of Peachtree Creek in Georgia on 20 July 1864. He was honored with the award on 12 January 1892.