This is a list of members of the South Australian House of Assembly from 1956 to 1959, as elected at the 1956 state election:

Name Party Electorate Term of office George Bockelberg LCL Eyre 1956–1968 Hon David Brookman LCL Alexandra 1948–1973 Gabe Bywaters Labor Murray 1956–1968 John Clark Labor Gawler 1952–1973 Geoffrey Clarke LCL Burnside 1946–1959 Jim Corcoran Labor Millicent 1945–1947, 1953–1962 John Coumbe LCL Torrens 1956–1977 Charles Davis Labor Port Pirie 1946–1959 Colin Dunnage LCL Unley 1941–1962 Don Dunstan Labor Norwood 1953–1979 John Fletcher Independent Mount Gambier 1938–1958 Rufus Goldney LCL Gouger 1944–1959 George Hambour LCL Light 1956–1960 Leslie Harding LCL Victoria 1956–1965 James Heaslip LCL Rocky River 1949–1968 Leslie Heath LCL Wallaroo 1956–1957 Hon Cecil Hincks LCL Yorke Peninsula 1941–1963 Lloyd Hughes Labor Wallaroo 1957–1970 Cyril Hutchens Labor Hindmarsh 1950–1970 William Jenkins LCL Stirling 1952–1963 Joe Jennings Labor Enfield 1953–1977 Harold King LCL Chaffey 1956–1962 Condor Laucke LCL Barossa 1956–1965 Sam Lawn Labor Adelaide 1950–1971 Ron Loveday Labor Whyalla 1956–1970 Hon Sir Malcolm McIntosh LCL Albert 1921–1959 Robin Millhouse LCL Mitcham 1955–1982 Mick O'Halloran Labor Frome 1918–1921, 1924–1927, 1938–1960 Hon Baden Pattinson LCL Glenelg 1930–1938, 1947–1965 Glen Pearson LCL Flinders 1951–1970 Hon Thomas Playford LCL Gumeracha 1933–1968 Percy Quirke Independent Burra 1941–1968 Ron Ralston Labor Mount Gambier 1958–1962 Lindsay Riches Labor Stuart 1933–1970 Howard Shannon LCL Onkaparinga 1933–1968 James Stephens Labor Port Adelaide 1933–1959 Tom Stott Independent Ridley 1933–1970 Harold Tapping Labor Semaphore 1946–1964 Berthold Teusner LCL Angas 1944–1970 Frank Walsh Labor Edwardstown 1941–1968 Fred Walsh Labor West Torrens 1942–1965

The LCL member for Wallaroo, Leslie Heath, died on 16 July 1957. Labor candidate Lloyd Hughes won the resulting by-election on 3 August 1957. The Independent member for Mount Gambier, John Fletcher, died on 5 June 1958. Labor candidate Ron Ralston won the resulting by-election on 12 July 1958. The Labor member for Port Pirie, Charles Davis, died on 27 January 1959. No by-election was held due to the imminent 1959 state election.