Umi no Nakamichi (海の中道, 'road in the middle of the sea' or 'path through the sea') is a tombolo in Higashi-ku, Fukuoka, Fukuoka Prefecture, Japan. It connects Kyushu Island and Shikanoshima Island. It is 8km in length and up to 2.5 km in width. Its northern coast borders Genkai Sea and its southern coast Hakata Bay.