This is a list of members of the South Australian House of Assembly from 1986 to 1989, as elected at the 1985 state election:
| Name | Party | Electorate | Term of office |
|---|---|---|---|
| Roy Abbott | Labor | Spence | 1975–1989 |
| Hon Jennifer Adamson | Liberal | Coles | 1977–1993 |
| Hon Harold Allison | Liberal | Mount Gambier | 1975–1997 |
| June Appleby | Labor | Hayward | 1982–1989 |
| Hon Peter Arnold | Liberal | Chaffey | 1968–1970, 1973–1993 |
| Lynn Arnold | Labor | Ramsay | 1979–1994 |
| Dale Baker | Liberal | Victoria | 1985–1997 |
| Stephen Baker | Liberal | Mitcham | 1982–1997 |
| John Bannon | Labor | Ross Smith | 1977–1993 |
| Heini Becker | Liberal | Hanson | 1970–1997 |
| Peter Blacker | National | Flinders | 1973–1993 |
| Frank Blevins | Labor | Whyalla | 1985–1997 |
| Hon Ted Chapman | Liberal | Alexandra | 1973–1992 |
| Greg Crafter | Labor | Norwood | 1979, 1980–1993 |
| Murray De Laine | Labor | Price | 1985–2002 |
| Mike Duigan | Labor | Adelaide | 1985–1989 |
| Hon Bruce Eastick | Liberal | Light | 1970–1993 |
| Martyn Evans | Independent | Elizabeth | 1984–1994 |
| Stan Evans | Independent/Liberal [1] | Davenport | 1968–1993 |
| Don Ferguson | Labor | Henley Beach | 1982–1993 |
| Di Gayler | Labor | Newland | 1985–1989 |
| Roger Goldsworthy | Liberal | Kavel | 1970–1992 |
| Bob Gregory | Labor | Florey | 1982–1993 |
| Terry Groom | Labor | Hartley | 1977–1979, 1982–1993 |
| Graham Gunn | Liberal | Eyre | 1970–2010 |
| Terry Hemmings | Labor | Napier | 1977–1993 |
| Graham Ingerson | Liberal | Bragg | 1983–2002 |
| Kevin Hamilton | Labor | Albert Park | 1979–1993 |
| Hon Dr Don Hopgood | Labor | Baudin | 1970–1993 |
| Gavin Keneally | Labor | Stuart | 1970–1989 |
| John Klunder | Labor | Todd | 1977–1979, 1982–1993 |
| Susan Lenehan | Labor | Mawson | 1982–1993 |
| Peter Lewis | Liberal | Murray-Mallee | 1979–2006 |
| Kym Mayes | Labor | Unley | 1982–1993 |
| Terry McRae | Labor | Playford | 1970–1989 |
| John Meier | Liberal | Goyder | 1982–2006 |
| John Olsen | Liberal | Custance | 1979–1990, 1992–2002 |
| John Oswald | Liberal | Morphett | 1979–2002 |
| Norm Peterson | Independent | Semaphore | 1979–1993 |
| Hon Ron Payne | Labor | Mitchell | 1970–1989 |
| Keith Plunkett | Labor | Peake | 1979–1989 |
| Mike Rann | Labor | Briggs | 1985–2012 |
| Derek Robertson | Labor | Bright | 1985–1989 |
| Jack Slater | Labor | Gilles | 1970–1989 |
| John Trainer | Labor | Walsh | 1979–1993 |
| Philip Tyler | Labor | Fisher | 1985–1989 |
| Hon David Wotton | Liberal | Heysen | 1975–2002 |
- 1 Stan Evans, the MLA for Davenport and former Liberal MLA for Fisher, had been re-elected as an independent in 1985 after losing a preselection battle against incumbent Liberal and factional opponent Dean Brown. Evans subsequently rejoined the Liberal Party in 1986.