Nattai National Park, National park in New South Wales, Australia.

Nattai National Park is a protected area in New South Wales featuring sandstone cliffs that frame the Nattai River valley and extensive eucalyptus forests. The landscape includes deep gorges and dense vegetation that offers walkers various routes through different terrain types.

Settlers took up land in the lower Nattai and Burragorang valleys in 1827. From 1912, conservationists Myles Dunphy and Herb Gallop walked the region, and Dunphy lobbied to save a stand of Sydney blue gum at Blue Gum Creek, which was logged in the 1920s and 1930s. Dunphy proposed a Greater Blue Mountains national park in 1932; Nattai was created in 1991 and joined the UNESCO Greater Blue Mountains World Heritage Area in 2000.

Nattai is the southernmost of the eight protected areas inscribed in 2000 as the Greater Blue Mountains World Heritage Area. Its name comes from the Nattai River, whose valley the park protects. Visitors sign in and out at a logbook by the Wattle Ridge entrance, the only record of who is inside the park.

The park is accessible via Wattle Ridge Fire Road, where you will find an unsealed parking area and an information board. Visitors should prepare for variable weather and challenging terrain, especially when planning longer walks.

The Starlights Trail is a challenging walking route that leads to Emitts Flat Campsite by the river and passes through a variety of terrain types. This route requires stamina and appeals to experienced walkers seeking remote natural areas.