Lachlan was an electoral district of the Legislative Assembly in the Australian state of New South Wales. During the first two Parliaments (1856-1859), there was an electorate in the same area called Lachlan and Lower Darling, named after the Lachlan and Darling Rivers. Lachlan was created in 1859 and abolished in 1880, partly replaced by Forbes. In 1894, Forbes was abolished and Lachlan was recreated. In 1920, Lachlan and Ashburnham were absorbed into Murrumbidgee and elected three members under proportional representation. At the end of proportional representation in 1927, Lachlan was recreated. It was abolished in 1950, recreated in 1981 and abolished in 2007.
| First incarnation (1859–1880) | |||
|---|---|---|---|
| Member | Party | Term | |
| John Ryan | None | 1859–1864 | |
| James Martin | None | 1864–1869 | |
| James Watson | None | 1869–1880 | |
| Second incarnation (1894–1920) | |||
| Member | Party | Term | |
| James Carroll | Independent Protectionist | 1894–1895 | |
| Protectionist | 1895–1901 | ||
| Progressive | 1901–1904 | ||
| Andrew Kelly | Labor | 1904–1913 | |
| Thomas Brown | Labor | 1913–1917 | |
| Ernest Buttenshaw | Nationalist | 1917–1920 | |
| Third incarnation (1927–1950) | |||
| Member | Party | Term | |
| Ernest Buttenshaw | Country | 1927–1938 | |
| Griffith Evans | Country | 1938–1943 | |
| John Chanter | Labor | 1943–1947 | |
| Robert Medcalf | Country | 1947–1950 | |
| Fourth incarnation (1981–2007) | |||
| Member | Party | Term | |
| Ian Armstrong | National | 1981–2007 | |