Fukuoka Prefecture (Japanese: 福岡県, Hepburn: Fukuoka-ken) is a prefecture of Japan located on the island of Kyūshū. Fukuoka Prefecture has a population of 5,109,323 (1 June 2019) and has a geographic area of 4,986 km2 (1,925 sq mi). Fukuoka Prefecture borders Saga Prefecture to the southwest, Kumamoto Prefecture to the south, and Ōita Prefecture to the southeast.
Fukuoka is the capital and largest city of Fukuoka Prefecture, and the largest city on Kyūshū, with other major cities including Kitakyushu, Kurume, and Ōmuta. Fukuoka Prefecture is located at the northernmost point of Kyūshū on the Kanmon Straits, connecting the Tsushima Strait and Seto Inland Sea across from Yamaguchi Prefecture on the island of Honshu, and extends south towards the Ariake Sea.