Liverpool Plains was an electoral district of the Legislative Assembly in the Australian state of New South Wales, created in 1859 and including the Liverpool Plains (which includes Quirindi and Gunnedah) and the extensive pastoral district around the Gwydir River in the northwest of the state.
It was re-created in the 1904 re-distribution of electorates following the 1903 New South Wales referendum, which required the number of members of the Legislative Assembly to be reduced from 125 to 90.
[1] It consisted of parts of the abolished seats of Gunnedah, Quirindi, and Wellington.
In 1920, with the introduction of proportional representation it was absorbed into Wammerawa, along with Castlereagh and Mudgee.
The sitting member, Frank O'Keefe (Country), successfully contested Upper Hunter at the 1962 election.