Sanposen is a Koyasan Shingon Buddhist temple in Nakamura, Nagoya, an area known as the birthplace of Toyotomi Hideyoshi, said to date from the late Muromachi period. Stone monuments linked to Hideyoshi remain on its grounds, and together with the neighboring Toyokuni Shrine and Josenji Temple, it forms part of a sightseeing route tracing sites associated with him.