| Deputy Premier of Western Australia | |
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| Ministry | |
| State | |
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| Incumbent Kim Hames |
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| Style | The Honourable |
| Appointed by | Ken Michael as Governor of Western Australia |
| First | John Tonkin |
| Formation | 7 December 1955 |
| Term length | At the Governor's pleasure |
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The Deputy Premier of Western Australia is a role in the Government of Western Australia assigned to a responsible Minister in the Australian state of Western Australia. It has second ranking behind the Premier of Western Australia in Cabinet, and its holder serves as Acting Premier during absence or incapacity of the Premier. The role was only formally established on 7 December 1955, but had existed in practice since the earliest days of responsible government.
| Name | Party | Term Start | Term End |
|---|---|---|---|
| William Angwin | Labor | 16 April 1924 | 30 April 1927 |
| John Willcock | Labor | 30 April 1927 | 23 April 1930 |
| Charles Latham | Country | 23 April 1930 | 24 April 1933 |
| Alick McCallum | Labor | 24 April 1933 | 16 March 1935 |
| John Willcock | Labor | 16 March 1935 | 20 August 1936 |
| Michael Troy | Labor | 27 August 1936 | 21 April 1939 |
| Harry Millington | Labor | 21 April 1939 | 9 December 1943 |
| Frank Wise | Labor | 9 December 1943 | 31 July 1945 |
| Albert Hawke | Labor | 31 July 1945 | 1 April 1947 |
| Arthur Watts | Country | 1 April 1947 | 23 February 1953 |
| John Tonkin | Labor | 23 February 1953 | 2 April 1959 |
| Arthur Watts | Country | 2 April 1959 | 31 January 1962 |
| Crawford Nalder | Country | 1 February 1962 | 3 March 1971 |
| Herb Graham | Labor | 3 March 1971 | 30 May 1973 |
| Alexander Taylor | Labor | 30 May 1973 | 8 April 1974 |
| Ray McPharlin | National Country | 8 April 1974 | 20 May 1975 |
| Des O'Neil | Liberal | 5 June 1975 | 5 March 1980 |
| Ray O'Connor | Liberal | 5 March 1980 | 25 January 1982 |
| Cyril Rushton | Liberal | 25 January 1982 | 25 February 1983 |
| Mal Bryce | Labor | 25 February 1983 | 25 February 1988 |
| David Parker | Labor | 25 February 1988 | 13 February 1990 |
| Ian Taylor | Labor | 13 February 1990 | 16 February 1993 |
| Hendy Cowan | National | 16 February 1993 | 16 February 2001 |
| Eric Ripper | Labor | 16 February 2001 | 23 September 2008 |
| Kim Hames | Liberal | 23 September 2008 | Present |
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