This is a list of members of the Australian Senate from 1920 to 1923.[1] Half of its members were elected at the 5 May 1917 election and had terms starting on 1 July 1917 and finishing on 30 June 1923; the other half were elected at the 13 December 1919 election and had terms starting on 1 July 1920 and finishing on 30 June 1926.
^ abcdAppointed to a casual vacancy and only held office until the earlier of the next election for the House of Representatives or the Senate.[2]
^ abcdNationalist senator Robert Guthrie died on 20 January 1921; on 16 February Nationalist Edward Vardon was appointed to replace him however Vardon's appointment lapsed on 4 August 1921 due to lack of confirmation by the South Australian Parliament.
^ abcNationalist Vardon was reappointed on 9 August 1921until the 16 December 1922 election, when he was defeated by Labor candidate Bert Hoare for the remainder of the term finishing on 30 June 1923.