# Leader of the Opposition (Australian Capital Territory)

The leader of the opposition of the Australian Capital Territory, is an official role usually occupied by the leader of the second largest party or coalition in the Australian Capital Territory Legislative Assembly. The title is conferred under Standing Order 5A of the ACT Legislative Assembly, that the leader of the opposition shall be the leader of the largest non-Government party, with the consent of that member. In the event of an equal number of members of the second largest party, the Assembly shall vote and elect a leader of the opposition.

## List of opposition leaders of the Australian Capital Territory

| No. | Portrait | Name | Election | Party | Term | Term | Duration | Chief Minister |
| 1 | | Trevor Kaine | 1989 | Liberal | 11 May 1989 | 5 December 1989 | 208 days | Rosemary Follett 1989 |
| 2 | | Rosemary Follett | — | Labor | 5 December 1989 | 6 June 1991 | 1 year, 183 days | Trevor Kaine 1989—1991 |
| (1) | | Trevor Kaine | — | Liberal | 6 June 1991 | 21 June 1991 | 15 days | Rosemary Follett 1991—1995 |
| 3 | | Craig Duby | — | Independents Group | 21 June 1991 | 21 June 1991 | 6.5 hours | Rosemary Follett 1991—1995 |
| 4 | | Gary Humphries | — | Liberal | 21 June 1991 | 22 July 1991 | 31 days | Rosemary Follett 1991—1995 |
| (1) | | Trevor Kaine | 1992 | Liberal | 22 July 1991 | 21 April 1993 | 1 year, 273 days | Rosemary Follett 1991—1995 |
| 5 | | Kate Carnell | 1995 | Liberal | 21 April 1993 | 9 March 1995 | 1 year, 322 days | Rosemary Follett 1991—1995 |
| (2) | | Rosemary Follett | — | Labor | 9 March 1995 | 5 March 1996 | 362 days | Kate Carnell 1995—2000 |
| 6 | | Andrew Whitecross | — | Labor | 5 March 1996 | 19 August 1997 | 1 year, 167 days | Kate Carnell 1995—2000 |
| 7 | | Wayne Berry | 1998 | Labor | 19 August 1997 | 20 February 1998 | 185 days | Kate Carnell 1995—2000 |
| 8 | | Jon Stanhope | — | Labor | 19 March 1998 | 19 October 2001 | 3 years, 265 days | Kate Carnell 1995—2000 |
| 8 | | Jon Stanhope | 2001 | Labor | 19 March 1998 | 19 October 2001 | 3 years, 265 days | Gary Humphries 2000—2001 |
| (4) | | Gary Humphries | — | Liberal | 12 November 2001 | 25 November 2002 | 1 year, 13 days | Jon Stanhope 2001—2011 |
| 9 | | Brendan Smyth | 2004 | Liberal | 25 November 2002 | 16 May 2006 | 3 years, 172 days | Jon Stanhope 2001—2011 |
| 10 | | Bill Stefaniak | — | Liberal | 16 May 2006 | 13 December 2007 | 1 year, 211 days | Jon Stanhope 2001—2011 |
| 11 | | Zed Seselja | 2008 | Liberal | 13 December 2007 | 11 January 2013 | 5 years, 60 days | Jon Stanhope 2001—2011 |
| 11 | | Zed Seselja | 2012 | Liberal | 13 December 2007 | 11 January 2013 | 5 years, 60 days | Katy Gallagher 2011—2014 |
| 12 | | Jeremy Hanson | — | Liberal | 11 February 2013 | 25 October 2016 | 3 years, 257 days | Katy Gallagher 2011—2014 |
| 12 | | Jeremy Hanson | 2016 | Liberal | 11 February 2013 | 25 October 2016 | 3 years, 257 days | Andrew Barr 2014— |
| 13 | | Alistair Coe | 2020 | Liberal | 25 October 2016 | 27 October 2020 | 4 years, 2 days | Andrew Barr 2014— |
| 14 | | Elizabeth Lee | 2024 | Liberal | 27 October 2020 | 31 October 2024 | 4 years, 4 days | Andrew Barr 2014— |
| 15 | - | Leanne Castley | - | Liberal | 31 October 2024 | Incumbent | 123 days | Andrew Barr 2014— |