# List of Western Australian Legislative Council casual vacancies

This is a list of casual vacancies in the Western Australian Legislative Council since 1989. Casual vacancies in the Legislative Council are filled by a countback of all votes.
| Date | Electorate | Outgoing member | Party | Reason for vacancy | Incoming member | Party |
| 19 September 2023 | South West | James Hayward | National | Disqualified | Louise Kingston | National |
| 20 March 2023 | South West | Alannah MacTiernan | Labor | Resigned | Ben Dawkins | Independent |
| 6 February 2017 | North Metropolitan | Peter Katsambanis | Liberal | Resigned to contest Legislative Assembly seat of Hillarys | Elise Irwin | Liberal |
| 5 February 2017 | East Metropolitan | Amber-Jade Sanderson | Labor | Resigned to contest Legislative Assembly seat of Morley | Bill Leadbetter | Labor |
| 29 August 2016 | North Metropolitan | Ken Travers | Labor | Resigned | Laine McDonald | Labor |
| 10 March 2015 | North Metropolitan | Ljiljanna Ravlich | Labor | Resigned | Martin Pritchard | Labor |
| 12 February 2013 | Agricultural | Mia Davies | National | Resigned to contest Legislative Assembly seat of Central Wheatbelt | Martin Aldridge | National |
| 12 February 2013 | Mining and Pastoral | Wendy Duncan | National | Resigned to contest Legislative Assembly seat of Kalgoorlie | Dave Grills | National |
| 13 February 2010 | East Metropolitan | Jock Ferguson | Labor | Died in office | Linda Savage | Labor |
| 12 August 2008 | Mining and Pastoral | Vince Catania | Labor | Resigned to contest Legislative Assembly seat of North West | Shelley Eaton | Labor |
| 11 August 2008 | North Metropolitan | Graham Giffard | Labor | Resigned to contest Legislative Assembly seat of Swan Hills | Carolyn Burton | Labor |
| 2 January 2008 | Agricultural | Murray Criddle | National | Resigned | Wendy Duncan | National |
| 29 October 2007 | East Metropolitan | Louise Pratt | Labor | Resigned to contest the Senate | Batong Pham | Labor |
| 22 June 2007 | Agricultural | Margaret Rowe | Liberal | Resigned | Brian Ellis | Liberal |
| 20 January 2005 | South Metropolitan | Jim Scott | Greens | Resigned to contest Legislative Assembly seat of Fremantle | Lynn MacLaren | Greens |
| 28 September 2004 | Mining and Pastoral | Tom Stephens | Labor | Resigned to contest federal seat of Kalgoorlie | Kevin Leahy | Labor |
| 20 January 2000 | South Metropolitan | John Halden | Labor | Resigned to take up the position of Labor Party State President. | Graham Giffard | Labor |
| 28 July 1998 | Agricultural | Eric Charlton | National | Resigned | Dexter Davies | National |
| 21 November 1996 | East Metropolitan | Alannah MacTiernan | Labor | Resigned to contest Legislative Assembly seat of Armadale | Paul Sulc | Labor |
| 19 November 1996 | North Metropolitan | Iain MacLean | Liberal | Resigned to contest Legislative Assembly seat of Wanneroo | Alan Carstairs | Liberal |
| 19 November 1996 | North Metropolitan | Sam Piantadosi | Independent | Resigned to contest Legislative Assembly seat of Yokine | Ed Dermer | Labor |
| 28 February 1995 | East Metropolitan | Tom Butler | Labor | Resigned | Valma Ferguson | Labor |
| 26 April 1994 | North Metropolitan | Bob Pike | Liberal | Died in office | Iain MacLean | Liberal |
| 14 January 1993 | South Metropolitan | Phillip Pendal | Liberal | Resigned to contest Legislative Assembly seat of South Perth | Diane Airey | Liberal |
| 13 January 1993 | East Metropolitan | Kay Hallahan | Labor | Resigned to contest Legislative Assembly seat of Armadale | Valma Ferguson | Labor |
| 3 March 1992 | Agricultural | Jim Brown | Labor | Resigned | Kim Chance | Labor |