Iwamoto-ji (岩本寺) is a Chisan Shingon temple in Shimanto, Kōchi Prefecture, and Temple 37 on the Shikoku 88 temple pilgrimage. It is one of the pilgrimage temples where worship centers on Fudō Myō-ō, Shō Kannon, Amida Nyōrai, Yakushi Nyorai, and Jizō Bosatsu, giving it importance in local Buddhist practice and pilgrimage travel. The temple is said to have been founded by Gyōki in the Nara period, between 729 and 749. Its role in the Shikoku 88 route makes it part of one of Japan’s best-known devotional circuits, linking it with centuries of pilgrim movement across Shikoku.