Iwamoto-ji is a Chisan Shingon temple in Shimanto, Kōchi Prefecture, Japan. Temple 37 on the Shikoku 88 temple pilgrimage, the deities that are worshipped at this temple are Fudō Myō-ō, Shō Kannon, Amida Nyōrai, Yakushi Nyorai, and Jizō Bosatsu. The temple is said to have been founded by Gyōki during 729–749.