This is a list of members of the South Australian House of Assembly from 1921 to 1924, as elected at the 1921 state election:

Name Party Electorate Term of office Peter Allen Liberal Yorke Peninsula 1902–1912, 1915–1925 Ernest Anthoney Liberal Sturt 1921–1938 Henry Barwell Liberal Stanley 1915–1925 Frederick Birrell Labor North Adelaide 1921–1933 Alfred Blackwell Labor West Torrens 1918–1938 Hon Sir Richard Butler Liberal Barossa 1890–1924 Richard Layton Butler Liberal Wooroora 1915–1918, 1921–1938 Thomas Butterfield Labor Newcastle 1915–1917, 1918–1933 John Chapman Farmers and Settlers/Country Party Flinders 1918–1924 Henry Crosby Liberal Barossa 1917–1924, 1924–1930, 1933–1938 Bill Denny Labor Adelaide 1900–1905, 1906–1933 Samuel Dickson Liberal Burra Burra 1921–1924 Bert Edwards Labor Adelaide 1917–1931 John Fitzgerald Labor Port Pirie 1918–1936 John Godfree Liberal Murray 1921–1927 John Gunn Labor Adelaide 1915–1917, 1918–1926 William Hague Liberal Barossa 1912–1924 Walter Hamilton Liberal East Torrens 1917–1924, 1925–1930, 1933–1938 Joseph Anthony Harper Liberal East Torrens 1921–1924 William Harvey Labor Newcastle 1918–1933 Thomas Hawke Farmers and Settlers/Country Party Burra Burra 1921–1924 Percy Heggaton Liberal Alexandra 1906–1915, 1923–1938 Lionel Hill Labor Port Pirie 1915–1917, 1918–1933 Herbert Hudd Liberal Alexandra 1912–1915, 1920–1938, 1941–1948 Leslie Claude Hunkin Labor East Torrens 1921–1927 George Hussey Liberal Sturt 1921–1924 George Jenkins Liberal Burra Burra 1918–1924, 1927–1930, 1933–1956 George Laffer Liberal Alexandra 1913–1933 John McInnes Labor West Torrens 1918–1950 Malcolm McIntosh Farmers and Settlers/Country Party Albert 1921–1959 James McLachlan Liberal Wooroora 1918–1930 Frederick McMillan Farmers and Settlers/Country Party Albert 1921–1933 James Moseley Liberal Flinders 1910–1933 Robert Nicholls Liberal Stanley 1915–1956 John Pedler Labor Wallaroo 1918–1938 Vernon Petherick Liberal Victoria 1918–1924; 1941–1945 John Price Labor Port Adelaide 1915–1925 John Randell Liberal Murray 1921–1924 Peter Reidy National/Liberal Victoria 1915–1932 Herbert Richards Liberal Sturt 1921–1930 Robert Richards Labor Wallaroo 1918–1949 George Ritchie Liberal Alexandra 1902–1922 Albert Robinson Liberal Wooroora 1915–1924, 1934–1943 Henry Tossell Liberal Yorke Peninsula 1915–1930 John Stanley Verran Labor Port Adelaide 1918–1924, 1925–1927 Stanley Whitford Labor North Adelaide 1921–1927 Harry Dove Young Liberal Murray 1912–1927

The parliamentary wing of the Farmers and Settlers Association had been referred to by a variety of labels prior to this term of parliament, and had contested the 1921 election independently of the National-dominated "Progressive Country Party". After the 1921 election, the party formally adopted the "Country Party" name, consistent with their federal counterparts. Alexandra Liberal MHA George Ritchie resigned on 2 November 1922. Liberal candidate Percy Heggaton won the resulting by-election on 20 January 1923. The Liberal Union and the National Party merged in October 1923 to form the Liberal Federation.