Nagano Prefecture (長野県, Nagano-ken) is a prefecture of Japan located in the Chūbu region of Honshū. Nagano Prefecture has a population of 2,052,493 (1 June 2019) and has a geographic area of 13,561 km² (5,236 sq mi). Nagano Prefecture borders Niigata Prefecture to the north, Gunma Prefecture to the northeast, Saitama Prefecture to the east, Yamanashi Prefecture to the southeast, Shizuoka Prefecture and Aichi Prefecture to the south, and Gifu Prefecture and Toyama Prefecture to the west.
Nagano is the capital and largest city of Nagano Prefecture, with other major cities including Matsumoto, Ueda, and Iida. Nagano Prefecture has impressive highland areas of the Japanese Alps, including most of the Hida Mountains, Kiso Mountains, and Akaishi Mountains which extend into the neighboring prefectures. The abundance of mountain ranges, natural scenic beauty, and rich history has gained Nagano Prefecture international recognition as a world-class winter sports tourist destination, including host to the 1998 Winter Olympics and a new Shinkansen line to Tokyo.