| Deputy Premier of Western Australia | |
|---|---|
 | |
 | |
since 8 June 2023 | |
| Department of the Premier and Cabinet | |
| Style | The Honourable |
| Member of |
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| Reports to | Premier of Western Australia |
| Seat | Dumas House, Perth |
| Nominator | Premier of Western Australia |
| Appointer | Governor of Western Australia on the advice of the premier |
| Term length | At the Governor's pleasure |
| Formation | 7 December 1955 |
| First holder | John Tonkin |
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.