Kumano-jinja, shrine in Yotsukaidō, Chiba

Kumano-jinja is a Shinto shrine in the Tono-dai area of Kamezaki, Yotsukaido, Chiba Prefecture, dedicated to the two Kumano deities and known as Kumano Nisha Daigongen. Its grounds cover 950 tsubo (about 3,140 square metres) and hold a grove planted at the shrine's founding, now a city-designated natural monument. The shrine also contains numerous small subsidiary shrines, including a Tenmangu and a Konpira.

Tradition dates the shrine's founding to the Eiwa era, 1375–1379, when a divided spirit of the Kumano shrines of Kishu was installed here and the site was called Kumano Nisha Daigongen. It served as the tutelary deity of the locality, and the Usui clan, a Chiba branch of the Taira descended from Emperor Kanmu and lords of Usui-no-sho, is linked to it. It held the rank of village shrine (sonsha).

The shrine's annual festival is held on 15 October and the days before it, when the Kamezaki-bayashi, a local intangible folk cultural property, is offered. New Year rites begin at midnight on 1 January, with sacred sake and amazake served and talismans distributed in limited numbers. Prayers for spring and autumn are held on 11 February and in late August.

The shrine sits in a quiet part of Yotsukaido, reached by a narrow path flanked by low fences and small stone lanterns. It is open year-round and easily accessible on foot or by car from the town center, feeling like a hidden spot away from busy streets.

The shrine grounds contain a grove of trees planted at the time of its founding in the 1375-1379 Ewa era, now designated a natural monument by the city of Yotsukaido. The main deities are Izanagi, Izanami, Hayatamao and Kotosakao, and the shrine was founded as a branch of the Kumano shrine in Kishu.