Los Glaciares National Park (Spanish: Parque Nacional Los Glaciares) is a federal protected area in Santa Cruz Province, Argentina.
The park covers an area of 726,927 ha (7,269.27 km; 2,806.68 sq mi), making it the largest national park in the country.Established on 11 May 1937, it hosts a representative sample of Magellanic subpolar forest and west Patagonian steppe biodiversity in good state of conservation. In 1981, it was declared a World Heritage Site by UNESCO.