Forest Den National Park, Nature reserve in Barcaldine Regional, Australia.

Forest Den National Park is a nature reserve with varied landscapes ranging from woodlands to grasslands situated at around 243 meters elevation. The protected area spans approximately 59 square kilometers of wilderness in the region.

The protected area was established in 1991 to preserve the natural ecosystems of the region. This creation marked an important step in safeguarding local biodiversity.

Remains of fences across the park mark more than 100 years of grazing use before it became a national park in 1991. The name Forest Den refers to the wooded pocket of country around the permanent billabongs of Torrens Creek, a tributary of Cooper Creek.

The park lies east of the partly unsealed road from Aramac to Torrens Creek, about 100 km north of Aramac. A four-wheel-drive vehicle is advised, and even small amounts of rain can make the tracks inside the park impassable. Wild camping is permitted, but there are no facilities of any kind.

The area contains substantial populations of black gidgee trees, which are an important part of Queensland's plant diversity. These trees are well adapted to local conditions and shape the woodland appearance.