Sir Edward Horne Wittenoom KCMG (12 February 1854 – 5 March 1936) was an Australian politician who served intermittently in the Legislative Council of Western Australia between 1883 and 1934, including as President of the Legislative Council from 1922 to 1926. He sat in the Legislative Council from 1883 to 1884, 1885 to 1886, 1894 to 1898, 1902 to 1906, and finally from 1910 to 1934. Wittenoom was a minister in the government of Sir John Forrest, and was also Agent-General for Western Australia between 1898 and 1901.