Tierra del Fuego National Park is a national park on the Argentine part of the island of Tierra del Fuego, within Tierra del Fuego Province in the ecoregion of Patagonic Forest and Altos Andes, a part of the subantarctic forest. Established on October 15, 1960 under the Law 15.554 and expanded in 1966, it was the first shoreline national park to be established in Argentina.

The park has dramatic scenery, with waterfalls, forests, mountains and glaciers. Its 630 km2 (240 sq mi) include parts of the Fagnano and Roca lakes. The Senda Costera (Coastal Path), connecting Ensenada Bay to Lapataia Bay on Lago Roca, is a popular hiking trail within the park. Forests of Antarctic beech, lenga beech and coihue in the lower elevations of the park are home to many animal species. There are 20 species of terrestrial mammals, including the guanaco, Andean Fox, North American Beaver, European Rabbit and muskrat. Among the 90 species of birds are the Kelp Goose, Torrent Duck, Austral Parakeet, Andean Condor, Blackish Oystercatcher, and Magellanic Oystercatcher.