Goulburn River National Park, Nature reserve in New South Wales, Australia.

Goulburn River National Park covers about 90 km² on the northeastern slopes of the Great Dividing Range, where the Goulburn River runs through the park for roughly 90 km. The park lies in the Hunter Valley region, 213 km northwest of Sydney and 35 km southwest of Merriwa, near Sandy Hollow, Denman, Merriwa and Mudgee. It borders Wollemi National Park to the southeast.

The New South Wales government established the park in 1983 to protect the river ecosystem and surrounding landscapes. This decision reflected growing efforts to safeguard natural areas in the region.

The Goulburn River valley served the Wiradjuri, Kamilaroi and Wonnarua peoples as a route between the coast and the western plains. Around 300 Aboriginal sites lie in the park, mostly sandstone overhangs along the river decorated with paintings in which local animals and plants play a central role.

The park has two riverside campgrounds where visitors can stay while exploring hiking trails, swimming spots, and fishing areas. It is best to visit during daylight hours and plan activities around water safety and trail conditions.

The park forms part of the Mudgee-Wollar Important Bird Area and is home to the rare regent honeyeater alongside many other native species. This bird habitat attracts bird watchers and nature observers throughout the year.