Sir William Elliot Johnson KCMG (10 April 1862 – 8 December 1932) was an Australian politician.
He was a long-serving member of the House of Representatives (1903–1928) and served non-consecutive terms as Speaker of the House (1913–1914, 1917–1923), the first person to do so.
He was a member of the anti-Labor parties throughout his tenure in parliament.