Chōkai-san Ōmonoimi Shrine (Chōkai-san Ōmonoimi Jinja) is a Shinto shrine located in Yuza Town, Akumi District, Yamagata Prefecture. It is the Ichinomiya (highest-ranked shrine) of the former Dewa Province.



The name “Ōmonoimi Shrine” refers collectively to the main shrine at the summit of Mount Chōkai and the two lower shrines (Kuchi-no-miya or Satomiya) located at its base in the Fukura and Warabioka areas. The sacred mountain of this shrine is Mount Chōkai, which is also affectionately known as Dewa Fuji or Chōkai Fuji for its resemblance to Mount Fuji.



This shrine has long served as the center of mountain worship for Mount Chōkai, and on March 28, 2008 (Heisei 20), the shrine precincts were designated a National Historic Site.



Enshrined Deities:
•Ōmonoimi Ōkami
 The main enshrined deity. This deity does not appear in Japan’s classical texts such as the Kojiki or Nihon Shoki, and remains shrouded in mystery. However, works such as the Jingi Shiryō and Dai Nihon Koku Ichinomiya-ki identify Ōmonoimi Ōkami with Uka-no-Mitama-no-Mikoto (the spirit of grain/inari deity).
•Toyouke-hime-no-Mikoto
•Tsukuyomi-no-Mikoto – Enshrined at the Fukura Kuchi-no-miya



In ancient times, Mount Chōkai was revered as a guardian deity of the nation. From the late classical period onward, it became the spiritual center of mountain worship (sangaku shinkō) in Dewa Province. The surrounding regions—particularly the Shōnai area of present-day Yamagata Prefecture, as well as Yuri District and the Yokote Basin in present-day Akita Prefecture—have long held the mountain in deep reverence. Especially from the early modern period onward, the deity has also been widely worshipped as an agricultural god.