Tallaganda National Park, Nature reserve in Snowy Monaro Regional Council, Australia

Tallaganda National Park is a nature reserve in the Snowy Monaro region featuring rolling hills, eucalyptus forests, grassy plateaus, and rocky outcrops across its area. The landscape supports multiple habitats with native plants and wildlife that depend on these varied environments.

Tallaganda National Park lies about 45 km southeast of Canberra, on the western slopes of the Great Dividing Range, and consists of two separate sections: a smaller northern part near Hoskinstown and a larger southern part at Jingera, which adjoins Gourock National Park. Parts of the park were affected by the 2019–2020 Australian bushfires.

The park's name comes from the Tallaganda area, and it gave its name to Phallocephale tallagandensis, a velvet worm recorded there. Visitors today come for bushwalking, camping, mountain biking, orienteering and 4WD touring, and 55 bird species have been recorded in the park.

The park has no tourist facilities, and its tracks are suited only to four-wheel-drive vehicles. It is split into two separate sections: a smaller northern part near Hoskinstown, closer to Canberra, and a larger southern part at Jingera that adjoins Gourock National Park. Bushwalking and birdwatching are the main activities.

The park is the type locality of Phallocephale tallagandensis, a velvet worm named after Tallaganda and recorded there. The two separate sections lie on the western slopes of the Great Dividing Range, the smaller near Hoskinstown and the larger at Jingera, adjoining Gourock National Park. Parts of the park were affected by the 2019–2020 bushfires.