Risnjak je planina i nacionalni park u Gorskom kotaru.
Planinski masiv Risnjak sastoji se od više planinskih vrhova i spada u najljepše hrvatske planine. Bogatstvo biljnog i životinjskog svijeta vidljivo je na svakom koraku. Planina je dobila ime po risu, koji obitava u njezinim šumama. Pod Risnjakom izvire rijeka Kupa, jedna od najčišćih rijeka u Republici Hrvatskoj.
Najznačajniji vrhovi Risnjaka su: Veliki Risnjak, visine 1528 m, Snježnik, visine 1506 m, Sjeverni Mali Risnjak od 1434 m i Južni Mali Risnjak, visok 1448 m.
Risnjak spada u planine Dinarskog gorja. Ima planinsku klimu s puno padalina i najuži je planinski prag između Panonije i Mediterana, širine tridesetak kilometara.
U podnožju samog vrha smješten je Schlosserov dom (15 minuta do vrha). Najbrži prilaz je iz smjera Gornjeg Jelenja preko Vilja (Gornje Jelenje – Vilje makadamsko-asfaltirana cesta dužine 7 km).
Od Vilja do vrha Risnjak potrebno je oko 70 minuta hoda.
Medvjeđa vrata usjek su u prirodnoj stijeni na pola puta između Vilja i vrha Risnjak.
Risnjak is a mountain in the Risnjak National Park, in Gorski Kotar, Croatia. It belongs to the Dinaric Alps mountain range. The name of the massif probably comes from ris, the Croatian word for lynx. Another interpretation suggests that it comes from the local word risje, which is a name for a type of grass.
The vegetation is very diverse. Thirty different plant communities have been recorded, of which the most common are beech and fir forests (Fagetum illyricum abietotosum) which go up to 1240 m and then are replaced by sub-alpine beeches (Fagetum croaticum subalpinum). The highest vegetation is a belt of mountain pine (Pinetum mughi croaticum). The fauna is also diverse, but has been less well researched. There are particularly many species of birds and mammals, including several types of chamois, while since 1974 the area has once again been inhabited by the ris (lynx).
The highest peak of Risnjak mountain is "Risnjak" or Veliki Risnjak at 1528 m.a.s.l. (the latter name means "Big Risnjak"), and it is also the highest peak in the Risnjak National Park, and the second in Gorski kotar next to Bjelolasica. On its southern slope is located the mountain lodge called Šloserov dom, built by Josip Schlosser. The peak can be reached only on foot, from Crni Lug (3 h) or from an unpaved road beginning in Gornje Jelenje (1 h).
Medvjeđa vrata (Bear door) is passage in natural rock halfway between Vilje and the top of Risnjak.
The highest peaks of Risnjak mountain are: Veliki Risnjak (1528 m), Snježnik (1506 m), Sjeverni Mali Risnjak (1434 m) and Južni Mali Risnjak (1448 m).