Gunnedah is a town in north-central New South Wales, Australia and is the seat of the Gunnedah Shire local government area. In the 2021 census the town recorded a population of 8,338. Gunnedah is situated within the Liverpool Plains, a fertile agricultural region, with 80% of the surrounding shire area devoted to farming. The Namoi River flows west then north-west through the town providing water beneficial to agricultural operations in the area.

The Liverpool Plains are an extensive agricultural area covering about 12,000 km2 (4,600 sq mi) of the north-western slopes of New South Wales in Australia.