Ishikawa Prefecture (石川県, Ishikawa-ken; Japanese pronunciation: [i.ɕi̥.ka.wa, -waꜜ.keɴ]) is a prefecture of Japan located in the Chūbu region of Honshu island. Ishikawa Prefecture has a population of 1,096,721 (1 January 2025) and has a geographic area of 4,191 km (1618 sq mi). Ishikawa Prefecture borders Toyama Prefecture to the east, Gifu Prefecture to the southeast, and Fukui Prefecture to the south.
Kanazawa is the capital and largest city of Ishikawa Prefecture, with other major cities including Hakusan, Komatsu, and Kaga. Ishikawa is located on the Sea of Japan coast and features most of the Noto Peninsula which forms Toyama Bay, one of the largest bays in Japan. Ishikawa Prefecture is part of the historic Hokuriku region and formerly an important populated center that contained some of the wealthiest han (domains) of the Japanese feudal era. Ishikawa Prefecture is home to Kanazawa Castle, Kenroku-en one of the Three Great Gardens of Japan, Nyotaimori ("body sushi"), and Kutani ware.