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		Duration	Chief Minister
1		Trevor Kaine[1]	1989	Liberal	11 May 1989	5 December 1989	208 days		Rosemary Follett 1989
2		Rosemary Follett[2]	—	Labor	5 December 1989	6 June 1991	1 year, 183 days		Trevor Kaine 1989—1991
(1)		Trevor Kaine[3]	—	Liberal	6 June 1991	21 June 1991	15 days		Rosemary Follett 1991—1995
3		Craig Duby[4]	—	Independents Group	21 June 1991		6.5 hours[5]
4		Gary Humphries[6]	—	Liberal	21 June 1991	22 July 1991	31 days
(1)		Trevor Kaine[7]	1992	Liberal	22 July 1991	21 April 1993	1 year, 273 days
5		Kate Carnell[8]	1995	Liberal	21 April 1993	9 March 1995	1 year, 322 days
(2)		Rosemary Follett[9]	—	Labor	9 March 1995	5 March 1996	362 days		Kate Carnell 1995—2000
6		Andrew Whitecross[10]	—	Labor	5 March 1996	19 August 1997	1 year, 167 days
7		Wayne Berry[11]	1998	Labor	19 August 1997	20 February 1998	185 days
8		Jon Stanhope[12]	—	Labor	19 March 1998	19 October 2001	3 years, 265 days
			2001						Gary Humphries 2000—2001
(4)		Gary Humphries[13]	—	Liberal	12 November 2001	25 November 2002	1 year, 13 days		Jon Stanhope 2001—2011
9		Brendan Smyth[14]	2004	Liberal	25 November 2002	16 May 2006	3 years, 172 days
10		Bill Stefaniak[15]	—	Liberal	16 May 2006	13 December 2007	1 year, 211 days
11		Zed Seselja[16]	2008	Liberal	13 December 2007	11 January 2013	5 years, 60 days
			2012						Katy Gallagher 2011—2014
12		Jeremy Hanson[17]	—	Liberal	11 February 2013	25 October 2016	3 years, 257 days
			2016						Andrew Barr 2014—
13		Alistair Coe	2020	Liberal	25 October 2016	27 October 2020	4 years, 2 days
14		Elizabeth Lee	2024	Liberal	27 October 2020	31 October 2024	4 years, 4 days
15	-	Leanne Castley	-	Liberal	31 October 2024	Incumbent	169 days