Leader of the Opposition (Western Australia)

Leader of the Opposition in Western Australia
Incumbent Mike Nahan since 21 March 2017
Style	The Honourable
Term length	While leader of the largest political party not in government
Inaugural holder	Henry Daglish
Formation	25 August 1905
Deputy	Liza Harvey

In the Australian state of Western Australia, the Leader of the Opposition is the leader of the largest minority political party or coalition of parties in the Legislative Assembly of the Parliament of Western Australia. By convention, the leader is generally a member of the Legislative Assembly. The current Leader of the Opposition is Mike Nahan of the Liberal Party.

Prior to 1911, the Western Australian political system had neither organised political parties (apart from the Labor Party) nor an organised opposition. The notion of leader of the opposition was well-understood however, and on occasions was applied to members. Maitland Brown, for example, was often referred to as "Leader of the Opposition" during his period as an outspoken critic of Governor Robinson's Government.