Risnjak National Park (Croatian: Nacionalni park Risnjak) is a national park in Croatia. It is located in Gorski kotar, the most mountainous and heavily forested region of the country, about 15 km inland from the Adriatic Sea. The park covers an area of 63.5 square kilometers including the central part of Risnjak and Snježnik massif and the source area of the river Kupa.