Aukštaitija National Park is a national park in north-eastern Lithuania, about 100 km north of Vilnius. Established in 1974, it is the oldest of the five national parks in Lithuania. It was initially named Lithuanian SSR National Park to emphasize that it was the first such park in the republic. In 1991 four other parks were established and were named after ethnographic regions of Lithuania. The park was renamed after Aukštaitija.