Nisseki-ji (日石寺) is a Buddhist temple in the town of Kamiichi, Toyama Prefecture, Japan. The temple belongs to the Shingon sect of Japanese Buddhism. It is more popularly known by the name of Ōiwa Fudō (大岩不動) after its main image.
Shingon Buddhism (真言宗, Shingon-shū) is one of the major schools of Buddhism in Japan and one of the few surviving Vajrayana lineages in East Asia, originally spread from India to China through traveling monks such as Vajrabodhi and .