This is a list of members of the South Australian Legislative Council from 1918 to 1921.

Name District Party Term expiry Time in office John George Bice Northern Liberal Union 1921 1894–1923 Joseph Botterill Southern Liberal Union 1921 1915–1920 John Carr Central No. 1 Labor 1921 1915–1929 John Herbert Cooke Central No. 2 Liberal Union 1921 1915–1933 John Cowan Southern Liberal Union 1924 1910–1944 Walter Gordon Duncan Midland Liberal Union 1924 1918–1962 Tom Gluyas Central No. 1 Labor 1924 1918–1931 David Gordon Midland Liberal Union 1924 1913–1944 Walter Hannaford Midland Liberal Union 1921 1912–1941 William Humphrey Harvey Central No. 2 National Party 1924 1915–1935 James Jelley Central No. 1 Labor 1921 1912–1933 Andrew Kirkpatrick Central No. 1 Labor 1924 1891–1897, 1900–1909, 1918–1928 John Lewis Northern Liberal Union 1921 1898–1923 Thomas McCallum Southern Liberal Union 1921 1920–1938 William George Mills Northern Farmers and Settlers 1924 1918–1933 William Morrow Northern Liberal Union 1924 1915–1934 Thomas Pascoe Midland Liberal Union 1921 1900–1933 Sir Lancelot Stirling Southern Liberal Union 1924 1891–1932 Henry Tassie Central No. 2 Liberal Union 1924 1918–1938 Alfred von Doussa Southern Liberal Union/Independent 1921 1901–1921 Frederick Samuel Wallis Central No. 2 Labor/Independent 1921 1907–1921

Central No. 2 District MLC Frederick Samuel Wallis was expelled from the Labor Party in September 1918. He served out the remainder of his term as an independent. Liberal Union MLC Joseph Botterill died on 17 August 1920. Thomas McCallum won the resulting by-election on 9 October. In August 1920, the Liberal Union refused to accept the preselection nomination of Southern District MLC Alfred von Doussa for the 1921 election after he refused to sign a pledge that he would not contest the election if he lost preselection. Following his preselection loss, von Doussa acted as an independent for the remainder of his term while running for re-election.

References Parliament of South Australia — Statistical Record of the Legislature