The Chūbu region, Central region, or Central Japan is a region in the middle of Honshū, Japan's main island. In a wide, classical definition, it encompasses nine prefectures (ken): Aichi, Fukui, Gifu, Ishikawa, Nagano, Niigata, Shizuoka, Toyama, and Yamanashi.
It is located directly between the Kantō region and the Kansai region and includes the major city of Nagoya as well as Pacific Ocean and Sea of Japan coastlines, extensive mountain resorts, and Mount Fuji.
The region is the widest part of Honshū and the central part is characterized by high, rugged mountains. The Japanese Alps divide the country into the Pacific side, sunny in winter, and the Sea of Japan side, snowy in winter.
Although Mie is part of Kinki/Kansai/Western Japan in traditional geographical regional divisions, Northern Mie is part of the metropolitan area around Nagoya, and Mie is in many practical contexts considered to be part of Tōkai/Chūbu/Central Japan. Including Mie, Chūbu had a population of 23,010,276 as of 1 June 2019.
In the MLIT of the central government, the jurisdiction of the Chūbu regional development bureau (中部地方整備局, Chūbu-chihō seibi-kyoku; (ja)) extends to five prefectures: Gifu, Shizuoka, Aichi, Mie and the Southern part of Nagano.
In the National Police Agency, the Chūbu Regional Police Bureau (中部管区警察局, Chūbu kanku keisatsu-kyoku; (ja)) is responsible for six prefectural police forces: Toyama, Ishikawa, Fukui, Gifu, Aichi and Mie.
In local government, the Chūbu area governors' association (中部圏知事会, Chūbuken chijikai) unites the governors of Toyama, Ishikawa, Fukui, Nagano, Gifu, Shizuoka, Aichi, Mie and Shiga and the mayor of Nagoya City in Aichi.
Located in the center of the Japanese archipelago. It refers to the area between the Kanto, Tohoku and Kansai regions. It began to be used in the late Meiji era as a tentative name for unclassified areas. In a broad sense, it often refers to the eight regional divisions and similar ranges. In a narrow sense it may refer to a range similar to the Tōkai region.