This is a list of electoral results for the Electoral district of Irwin in Western Australian state elections.
| Irwin (1890–1930) | ||||
|---|---|---|---|---|
| Member | Party | Term | ||
| Samuel J. Phillips | Ministerial | 1890–1904 | ||
| Samuel Moore | Ministerial | 1904–1911 | ||
| Liberal | 1911–1914 | |||
| James Gardiner | Country | 1914–1921 | ||
| Charles Maley | Country | 1921–1923 | ||
| Country (MCP) | 1923–1924 | |||
| Nationalist | 1924–1928 | |||
| Country | 1928–1929 | |||
| Henry Maley | Country | 1929–1930 | ||
| Irwin-Moore (1930–1950) | ||||
| Member | Party | Term | ||
| Percy Ferguson | Country | 1930–1939 | ||
| Claude Barker | Independent | 1939 | ||
| Horace Berry | Independent | 1939–1947 | ||
| John Ackland | Country | 1947–1950 | ||