Ikazuchi-jinja, Shinto shrine in Japan

Ikazuchi-jinja is a small Shinto shrine in Itoshima dedicated to a thunder god. The structure is made of dark wood with a simple roof, and a thick rope hangs at the entrance that visitors ring to get attention or make wishes, with small stone statues and offerings left by visitors visible throughout the grounds.

According to the shrine's record, the雷山社記, the deity Sosogi Daimyōjin repelled seven invasions from foreign enemies by turning into a great thunderbolt, and Emperor Suinin then ordered a shrine built as protector against enemies. Empress Jingū later founded the upper shrine (Kamimiya) near the summit, enshrining the heavenly and earthly generations of deities. In 1342 Ashikaga Tadayoshi prayed here for rain and composed a poem after it fell. The shrine became a prefectural shrine in 1919.

The name Ikazuchi means thunder in Japanese, and the shrine is dedicated to a lightning or thunder god. Visitors leave small offerings, light incense, or write wishes on wooden plaques called ema, and these actions show how deeply rooted this place is in the daily life of local people.

The shrine sits on the slope of Mount Raizan at 955 m, reached from the Raizan Kannon-mae bus stop at the end of the Itoshima community bus Raizan line, about 30 minutes from Chikuzen-Maebaru Station on the JR Chikuhi line, then 20 minutes on foot (1.6 km). By car it is 9 km from the Maebara interchange of the Nishi-Kyushu Expressway. The upper shrine (Kamimiya) stands near the summit.

The shrine's own record, the Raizan Shaki, tells that the thunder deity Sosogi Daimyojin turned into a great thunderbolt to defeat seven invasions from foreign enemies during the reigns of emperors Kōan to Suinin. The shrine was then honoured as a god for subduing hostile lands.