# Members of the South Australian House of Assembly, 1918–1921

This is a list of members of the South Australian House of Assembly from 1918 to 1921, as elected at the 1918 state election:
| Name | Party | Electorate | Term of office |
| Peter Allen | Liberal | Yorke Peninsula | 1902–1912, 1915–1925 |
| William Angus | Liberal | Albert | 1912–1921 |
| Edward Alfred Anstey | National | North Adelaide | 1908–1921 |
| Henry Barwell | Liberal | Stanley | 1915–1925 |
| Harry Buxton | Labor | Burra Burra | 1918–1921 |
| Arthur Blackburn | National | Sturt | 1918–1921 |
| Alfred Blackwell | Labor | West Torrens | 1918–1938 |
| Hon Sir Richard Butler | Liberal | Barossa | 1890–1924 |
| Thomas Butterfield | Labor | Newcastle | 1915–1917, 1918–1933 |
| John Chapman | Farmers and Settlers | Flinders | 1918–1924 |
| Frederick Coneybeer | National | East Torrens | 1893–1921, 1924–1930 |
| Henry Crosby | Liberal | Barossa | 1917–1924, 1924–1930, 1933–1938 |
| Bill Denny | Labor | Adelaide | 1900–1905, 1906–1933 |
| Bert Edwards | Labor | Adelaide | 1917–1931 |
| John Fitzgerald | Labor | Port Pirie | 1918–1936 |
| 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 |
| William Harvey | Labor | Newcastle | 1918–1933 |
| Lionel Hill | Labor | Port Pirie | 1915–1917, 1918–1933 |
| Herbert Hudd | Liberal | Alexandra | 1912–1915, 1920–1938, 1941–1948 |
| George Jenkins | Liberal | Burra Burra | 1918–1924, 1927–1930, 1933–1956 |
| George Laffer | Liberal | Alexandra | 1913–1933 |
| John McInnes | Labor | West Torrens | 1918–1950 |
| James McLachlan | Liberal | Wooroora | 1918–1930 |
| James Moseley | Liberal | Flinders | 1910–1933 |
| Robert Nicholls | Liberal | Stanley | 1915–1956 |
| Richard Alfred O'Connor | Liberal | Albert | 1915–1921 |
| Sid O'Flaherty | Labor | Murray | 1918–1921 |
| Mick O'Halloran | Labor | Burra Burra | 1918–1921, 1924–1927, 1938–1960 |
| Angas Parsons | Liberal | Murray | 1912–1915, 1918–1921 |
| Hon Archibald Peake | Liberal | Alexandra | 1897–1915, 1915–1920 |
| John Pedler | Labor | Wallaroo | 1918–1938 |
| Vernon Petherick | Liberal | Victoria | 1918–1924, 1941–1945 |
| William David Ponder | National | North Adelaide | 1905–1921 |
| John Price | Labor | Port Adelaide | 1915–1925 |
| Peter Reidy | National | Victoria | 1915–1932 |
| Robert Richards | Labor | Wallaroo | 1918–1949 |
| George Ritchie | Liberal | Alexandra | 1902–1922 |
| Allan Robertson | Labor | Wooroora | 1918–1921, 1924–1927 |
| Albert Robinson | Liberal | Wooroora | 1915–1924, 1934–1943 |
| Thomas Hyland Smeaton | National | Sturt | 1905–1921 |
| John Albert Southwood | National/Independent Labor | East Torrens | 1912–1921 |
| Henry Tossell | Liberal | Yorke Peninsula | 1915–1930 |
| Edward Vardon | Liberal | Sturt | 1918–1924 |
| John Stanley Verran | Labor | Port Adelaide | 1918–1924, 1925–1927 |
| Harry Dove Young | Liberal | Murray | 1912–1927 |
    $^1$ Alexandra Liberal MHA Archibald Peake died on 6 April 1920. Liberal candidate Herbert Hudd won the resulting by-election on 12 June.
    $^2$ East Torrens MHA John Albert Southwood resigned from the National Party in 1920 and served out his term as an independent Labor member.
    $^3$ Murray Liberal MHA Angas Parsons resigned on 5 January 1921. No by-election was held due to the proximity of the 1921 state election.
    $^4$ Sturt Liberal MHA Edward Vardon resigned on 15 February 1921 in order to nominate for a casual vacancy in the Australian Senate. No by-election was held due to the proximity of the 1921 state election.