Sui Jinja Shrine, Shinto shrine in Japan

Sui Jinja Shrine is a Shinto shrine in Daisen, Akita Prefecture. Its main hall houses the Senkoku Senju Kannon Tokyozo Mirror, a national treasure, kept in a storage building added behind the hall in 2007. The shrine grove was planted in 1679 with cedars, four of which are city natural monuments.

The shrine was founded in 1677 after a bronze mirror was found 1.5 m underground during work on the Shimosegi canal. The finder, Kusakari Rizaemon, dedicated it as the shrine's kami on orders of the domain lord Satake Yoshimune. The mirror was designated a National Treasure in 1953, and the cedars of the shrine grove were planted in 1679.

The shrine's name, Sui Jinja, refers to water, and its founding is tied to a canal: in 1677 a mirror was dug up during work on the Shimosegi channel and the shrine was built to enshrine it as a guardian of the waterway. Annual rites run from Hatsu-omori on 16 January through the spring, insect and autumn festivals to the final rite on 16 December.

The shrine has a parking area, and the nearest station is Ugo-Nagano on the JR Tazawako Line. The mirror is shown only during the August 17 annual festival, for about an hour, so time a visit around it; a replica is on permanent display at the Chusen Civic Hall.

The mirror was not made for the shrine: in 1677 it was found 1.5 m underground during digging of the Shimosegi canal and handed to the lord Satake Yoshichika, who ordered it worshipped as a weir deity. The shrine was then founded by Kusakari Rizaemon. A replica is always on show at the Chusen Civic Hall.