This is a list of members of the Western Australian Legislative Assembly from 1986 to 1989:
| Name | Party | District | Years in office | |
|---|---|---|---|---|
| 1987–1993 | ||||
| Labor | 1974–1996 | |||
| Labor | 1968–1989 | |||
| Labor | 1983–1993 | |||
| Labor | 1968–1989 | |||
| 1971–1996 | ||||
| Liberal | 1983–2005 | |||
| Labor | 1980–2001 | |||
| Labor | 1971–1988 | |||
| Labor | 1983–1992 | |||
| Labor | 1973–1988 | |||
| Labor | 1968–1987 | |||
| Labor | 1983–1989 | |||
| Labor | 1974–1991 | |||
| Liberal | 1984–1989 | |||
| Liberal | 1974–1996 | |||
| Liberal | 1982–2001 | |||
| 1974–2001 | ||||
| Liberal | 1974–1989 | |||
| Labor | 1988–2001 | |||
| Labor | 1961–1986 | |||
| Labor | 1987–1993 | |||
| Labor | 1986–1990 | |||
| Labor | 1968–1989 | |||
| Labor | 1986–2006 | |||
| Liberal | 1947–1949; 1956–1993 | |||
| Liberal | 1987–1989 | |||
| Labor | 1977–2001 | |||
| Liberal | 1977–1990 | |||
| Labor | 1983–1996 | |||
| Labor | 1982–1994 | |||
| Labor | 1977–1989 | |||
| National | 1986–2005 | |||
| Labor | 1984–1986 | |||
| Labor | 1968–1989 | |||
| Liberal | 1974–1987 | |||
| Labor | 1986–1994 | |||
| Liberal | 1987–1989 | |||
| Liberal | 1986–1996 | |||
| Liberal | 1986–1989 | |||
| Liberal | 1977–1993 | |||
| Labor | 1986–2006 | |||
| Liberal | 1968–1991 | |||
| National | 1986–1987 | |||
| Labor | 1980–1990 | |||
| Labor | 1977–1993 | |||
| Labor | 1983–1989 | |||
| Labor | 1988–2013 | |||
| Liberal | 1965–1988 | |||
| National | 1986–1989 | |||
| Labor | 1983–1996 | |||
| Labor | 1983–1993 | |||
| Liberal | 1977–1987 | |||
| National | 1971–1989 | |||
| Labor | 1981–1996 | |||
| Labor | 1986–2001 | |||
| Liberal | 1971–1993 | |||
| Labor | 1971–1987 | |||
| National | 1986–2008 | |||
| Labor | 1983–1993 | |||
| Liberal | 1988–2001 | |||
| Liberal | 1975–1989 | |||
| Labor | 1983–1993 | |||
| Labor | 1986–1996 | |||
| Liberal | 1974–1993 | |||
| National | 1987–2001 | |||
| Liberal | 1977–1989 | |||
| Labor | 1977–1993 |
On 4 April 1986, the Labor member for Cockburn, Clive Hughes, died. Labor candidate Norm Marlborough won the resulting by-election on 7 June 1986.
On 16 April 1986, the Labor member for Victoria Park, Ron Davies, resigned to take up the role of Agent-General for Western Australia in London. Labor candidate Dr Geoff Gallop won the resulting by-election on 7 June 1986.
On 14 March 1987, the National member for Narrogin, Cambell Nalder, died. National candidate Bob Wiese won the resulting by-election on 9 May 1987.
On 18 March 1987, the Labor member for Morley-Swan, Hon Arthur Tonkin, resigned. Labor candidate Frank Donovan won the resulting by-election on 9 May 1987.
On 18 March 1987, the Labor member for Perth, Terry Burke, resigned. Labor candidate Dr Ian Alexander won the resulting by-election on 9 May 1987.
On 3 September 1987, the Liberal member for Gascoyne, Ian Laurance, resigned. Liberal candidate Dudley Maslen won the resulting by-election on 24 October 1987.
On 3 September 1987, the Liberal member for Darling Range, George Spriggs, resigned. Liberal candidate Bob Greig won the resulting by-election on 24 October 1987.
On 17 February 1988, the Labor member for Balga and Premier, Brian Burke, resigned. Labor candidate Ted Cunningham won the resulting by-election on 19 March 1988.
On 17 February 1988, the Labor member for Ascot and Deputy Premier, Mal Bryce, resigned. Labor candidate Eric Ripper won the resulting by-election on 19 March 1988.
On 25 February 1988, the Liberal member for Dale, former Court government minister Cyril Rushton, resigned. Liberal candidate Fred Tubby won the resulting by-election on 7 May 1988.