The WA Legislative Assembly was established in 1890 and the colony was divided into 30 electoral districts, each represented by one member in the Legislative Assembly. The members of the party or coalition who have the majority of seats in the Legislative Assembly elect a Premier. The current Premier is the 32nd to have held the office.
| Premier |
Party |
Period |
Months |
| Alan John Carpenter |
Australian Labor Party |
25 Jan 2006 - date |
|
| Dr Geoffrey Ian Gallop |
Australian Labor Party |
16 Feb 2001 - 25 Jan 2006 |
59 |
| Richard Fairfax Court |
Liberal |
16 Feb 1993 - 16 Feb 2001 |
96 |
| Carmen Mary Lawrence |
Australian Labor Party |
12 Feb 1990 - 16 Feb 1993 |
36 |
| Peter M'Callum Dowding |
Australian Labor Party |
25 Feb 1988 - 12 Feb 1990 |
24 |
| Brian Thomas Burke |
Australian Labor Party |
25 Feb 1983 - 25 Feb 1988 |
60 |
| Raymond James O'Connor |
Liberal |
25 Jan 1982 - 25 Feb 1983 |
13 |
| Sir Charles Walter Michael Court |
Liberal |
8 Apr 1974 - 25 Jan 1982 |
94 |
| John Trezise Tonkin |
Australian Labor Party |
3 Mar 1971 - 8 Apr 1974 |
37 |
| Sir David Brand |
Liberal |
2 Apr 1959 - 3 Mar 1971 |
143 |
| Albert Redvers George Hawke |
Australian Labor Party |
23 Feb 1953 - 2 Apr 1959 |
73 |
| Sir Duncan Ross McLarty |
Liberal |
1 Apr 1947 - 23 Feb 1953 |
71 |
| Frank Joseph Scott Wise |
Australian Labor Party |
31 Jul 1945 - 1 Apr 1947 |
20 |
| John Collings Willcock |
Australian Labor Party |
20 Aug 1936 - 31 Jul 1945 |
107 |
| Philip Collier |
Australian Labor Party |
24 Apr 1933 - 19 Aug 1936 |
40 |
| Sir James Mitchell |
Nationalist |
24 Apr 1930 - 24 Apr 1933 |
36 |
| Philip Collier |
Australian Labor Party |
16 Apr 1924 - 23 Apr 1930 |
72 |
| Sir James Mitchell |
Nationalist |
17 May 1919 - 15 Apr 1924 |
59 |
| Sir Hal Pateshall Colebatch |
Nationalist |
17 Apr 1919 - 17 May 1919 |
1 |
| Sir Henry Bruce Lefroy |
Nationalist |
28 Jun 1917 - 17 Apr 1919 |
22 |
| Frank Wilson |
Liberal |
27 Jul 1916 - 28 Jun 1917 |
11 |
| John Scaddan |
Labor |
7 Oct 1911 - 27 Jul 1916 |
58 |
| Frank Wilson |
Liberal |
16 Sep 1910 - 7 Oct 1911 |
13 |
| Sir Newton James Moore |
Ministerialist |
7 May 1906 - 16 Sep 1910 |
52 |
| Sir Cornthwaite Hector Rason |
Liberal |
25 Aug 1905 - 7 May 1906 |
8 |
| Henry Daglish |
Labor |
10 Aug 1904 - 25 Aug 1905 |
13 |
| Sir Walter Hartwell James |
Liberal |
1 Jul 1902 - 10 Aug 1904 |
25 |
| George Leake |
Opposition |
23 Dec 1901 - 24 Jun 1902 |
6 |
| Alfred Edward Morgans |
Ministerialist |
21 Nov 1901 - 23 Dec 1901 |
1 |
| George Leake |
Opposition |
27 May 1901 - 21 Nov 1901 |
6 |
| George Throssell |
Forrest |
15 Feb 1901 - 27 May 1901 |
3 |
| John Forrest |
Forrest |
29 Dec 1890 - 14 Feb 1901 |
123 |
