San Guillermo National Park (Spanish: Parque Nacional San Guillermo) is a national park in Argentina, in the Iglesia Department of San Juan Province. It was established in 1998 and is part of the San Guillermo Biosphere Reserve. Elevations in the biosphere range from 2,100 metres (6,900 ft) to 6,380 metres (20,930 ft). Vegetation in the National Park and biosphere consists of barren desert, grasslands, and a few wetlands, all located in the high, arid Andes. The animals include vicuña, guanaco, culpeo fox, Andean mountain cat, cougar, and Andean condor.