Narrabri is a locality and seat of Narrabri Shire local government area in the North West Slopes, New South Wales, Australia on the Namoi River, 521 kilometres (324 mi) northwest of Sydney. It sits on the junction of the Kamilaroi Highway and the Newell Highway. At the 2021 census, the town of Narrabri had a population of 5,499.

The Mount Kaputar National Park is a national park located in New South Wales, Australia, surrounding the proximities of Mount Kaputar, a volcano active between 17 and 21 million years ago. It is located 50 km (31 mi) east of Narrabri and 570 km (354 mi) northwest of Sydney. Millions of years of erosion have since carved the volcanic region into the lava terraces, volcanic plugs, and dykes of Nandewar Range. The central feature of the region is Mount Kaputar, the park's namesake, which rises to an altitude of 1,510 m (4,954 ft). The 360 degree view from the summit of the mountain encompasses one-tenth of New South Wales' area or 80,000 square kilometres (31,000 sq mi).