is a national park in Niigata Prefecture and Nagano Prefecture, Japan. Established in 2015, and formerly part of Jōshin'etsu-kōgen National Park, the park comprises an area of in the municipalities of Itoigawa and Myōkō in Niigata Prefecture and Iizuna, Nagano, Otari, and Shinano in Nagano Prefecture. Prominent features of the park include Mount Myōkō, , , Mount Iizuna, , Niigata-Yake-Yama, and Lake Nojiri.