Gunma Prefecture is a prefecture of Japan located in the northwest corner of the Kantô region on Honshû island. Its capital is Maebashi.
One of only eight landlocked prefectures in Japan, Gunma is the northwestern-most prefecture of the Kantô plain. Except for the central and southeast areas, where most of the population is concentrated, it is mostly mountainous. To the north are Niigata and Fukushima prefectures, while to the east lies Tochigi. To the west lies Nagano prefecture, and Saitama is to the south.
Some of the major mountains in Gunma are Mount Akagi, Mount Haruna, Mount Myôgi, Mount Nikkô-Shirane and Mount Asama, which is located on the Nagano border. The first three are known as the "Three Mountains of Jômô." Major rivers include the Tone River, the Agatsuma River, and the Karasu River.
