Keiyō Industrial Zone (京葉工業地域 Keiyō Kōgyō Chiiki?), also known as the Keiyō Industrial Region, the Keiyō Industrial Area, or the Keiyō Industrial Belt, is an industrial zone on the northeastern coast of Tokyo Bay that crosses 8 cities in Chiba Prefecture, Japan. The zone spans from the western part of Urayasu in the northeast to Futtsu in the southeast of the region. The zone has no political or administrative status.
The name of the industrial zone is formed from two kanji characters. The first, , means "capital city" and refers to Tokyo. The second, , meaning "leaf", is the second kanji in "Chiba" and refers to Chiba Prefecture, and the compound refers to the Tokyo-Chiba region.
The Keiyō Industrial Zone spans the coast of Tokyo Bay from Urayasu in the northeast, through Funabashi, Chiba City, Kisarazu, Kimitsu, Ichihara, Sodegaura, and ends in Futtsu to the southeast. Numerous small rivers empty into the industrial region, and provide a source of water to support industry. They include the Edo River, the Yōrō River, and the Koito River.