Sir Eric John Harrison KCMG KCVO was an Australian politician.

Harrison was born in the Sydney suburb of Surry Hills and educated at Crown Street Superior Public School. He left school at 13 to work in the textile industry and soon became a manager of a textile factory. In October 1916 he joined in the First Australian Imperial Force and served from December 1917 on the Western Front in the 5th Field Artillery Brigade and was promoted to sergeant in May 1918. He married Mary Cook McCall in 1920.