Shiogama Jinja (鹽竈神社) is a Shinto shrine in the city of Shiogama, Miyagi Prefecture, in the Tōhoku region of northern Japan. Known from the ninth century, fifteen of its buildings have been designated Important Cultural Properties. It is the head shrine of several hundred Shiogama shrines located throughout Japan. The kami of Shiogama Jinja have long been worshipped as guardian deities of seafarers, notably fisherman, and of pregnant women.

Futsunushi , also known as Iwainushi , is a warrior god in Japanese mythology. Also known under the epithet Katori Daimyōjin (香取大明神) after his shrine in northern Chiba Prefecture, Katori Jingū, he is often revered alongside Takemikazuchi, with whom he is closely associated. He is regarded as a legendary ancestor of the Mononobe clan, and like Takemikazuchi is one of the tutelary deities of the Fujiwara clan.